<?xml version="1.0" encoding="us-ascii"?><InstanceReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><Version>2.4.0.8</Version><ReportLongName>007 - Disclosure - NOTE 2 - SUMMARY OF ACCOUNTING POLICIES</ReportLongName><DisplayLabelColumn>true</DisplayLabelColumn><ShowElementNames>false</ShowElementNames><RoundingOption /><HasEmbeddedReports>false</HasEmbeddedReports><Columns><Column FlagID="0"><Id>1</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><CurrencyCode /><FootnoteIndexer /><hasSegments>false</hasSegments><hasScenarios>false</hasScenarios><MCU><KeyName /><CurrencySymbol /><contextRef><ContextID>c2_From1Apr2012To31Mar2013</ContextID><EntitySchema>http://www.sec.gov/CIK</EntitySchema><EntityValue>0001083706</EntityValue><PeriodDisplayName /><PeriodType>duration</PeriodType><PeriodStartDate>2012-04-01T00:00:00</PeriodStartDate><PeriodEndDate>2013-03-31T00:00:00</PeriodEndDate><Segments /><Scenarios /></contextRef><UPS /><CurrencyCode /><OriginalCurrencyCode /></MCU><CurrencySymbol /><Labels><Label Key="CalendarSupplement" Id="0" Label="12 Months Ended" /><Label Key="Calendar" Id="1" Label="Mar. 31, 2013" /></Labels></Column></Columns><Rows><Row FlagID="0"><Id>1</Id><IsAbstractGroupTitle>true</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>1</Level><ElementName>us-gaap_AccountingPoliciesAbstract</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText /><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>xbrli:stringItemType</ElementDataType><SimpleDataType>string</SimpleDataType><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>Accounting Policies [Abstract]</Label></Row><Row FlagID="0"><Id>2</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

</LabelSeparator><Level>2</Level><ElementName>us-gaap_SignificantAccountingPoliciesTextBlock</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><PreferredLabelRole>terseLabel</PreferredLabelRole><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="c2_From1Apr2012To31Mar2013" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt; FONT-WEIGHT: bold"&gt;NOTE

      2 - SUMMARY OF ACCOUNTING POLICIES&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt; FONT-WEIGHT: bold"&gt;Cash

      and cash equivalents&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt"&gt;Cash

      equivalents are highly liquid investments with an original

      maturity of three months or less.&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt; FONT-WEIGHT: bold"&gt;Use

      of estimates&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt"&gt;The

      preparation of financial statements in conformity with

      accounting principles generally accepted in the United States

      necessarily requires management to make estimates and

      assumptions that affect the amounts reported in the financial

      statements. We regularly evaluate estimates and judgments

      based on historical experience and other relevant facts and

      circumstances. Actual results could differ from those

      estimates.&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt; FONT-WEIGHT: bold"&gt;Fixed

      Assets&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt"&gt;Fixed

      assets are recorded at cost. Depreciation and amortization

      are provided using the straight-line method over the useful

      lives of the respective assets, typically 3-10 years. Major

      additions and betterments are capitalized. Upon retirement or

      disposal, the cost and related accumulated depreciation or

      amortization is removed from the accounts and any gain or

      loss is reflected in operations.&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt"&gt;Depreciation

      expenses included in operating expenses for the years ended

      March 31, 2013 and 2012 were $2,072 and $3,811,

      respectively.&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt"&gt;&lt;font style="FONT-STYLE: italic; DISPLAY: inline; FONT-WEIGHT: bold"&gt;Impairment

      of long-lived assets&lt;/font&gt; &amp;ndash; The Company reviews the

      carrying value of its long-lived assets annually or whenever

      events or changes in circumstances indicate that the

      historical-cost carrying value of an asset may no longer be

      appropriate. The Company assesses recoverability of the asset

      by comparing the undiscounted future net cash flows expected

      to result from the asset to its carrying value. If the

      carrying value exceeds the undiscounted future net cash flows

      of the asset, an impairment loss is measured and recognized.

      An impairment loss is measured as the difference between the

      net book value and the fair value of the long-lived asset.

      Fair value is estimated based upon either discounted cash

      flow analysis or estimated salvage value. As of March 31,

      2013, the company recognized $0 impairment expense.&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt"&gt;&lt;font style="FONT-STYLE: italic; DISPLAY: inline; FONT-WEIGHT: bold"&gt;Goodwill

      and other intangibles&lt;/font&gt; &amp;ndash; Goodwill and other

      intangibles with indefinite lives are not amortized but are

      reviewed for impairment at least annually, or more frequently

      if an event or circumstance indicates that an impairment may

      have occurred. To test for impairment, the fair value of each

      reporting unit is compared to the related net book value,

      including goodwill. If the net book value of the reporting

      unit exceeds the fair value, an impairment loss is measured

      and recognized. An income approach is utilized to estimate

      the fair value of each reporting unit. The income approach is

      based on the projected debt-free cash flow, which is

      discounted to the present value using discount factors that

      consider the timing and risk of cash flows.&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt; FONT-WEIGHT: bold"&gt;Licenses&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt"&gt;The

      costs associated with acquiring exclusive licensing rights to

      patented technology have been capitalized and are being

      charged to expense using the straight line method of

      amortization over ten years, the estimated remaining useful

      lives of the patents.&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt; FONT-WEIGHT: bold"&gt;Stock

      Based Compensation&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt"&gt;FASB

      ASC 718 requires that measurement of the cost of employee

      services received in exchange for an award of equity

      instruments be based on the grant-date fair value of the

      award. Such costs are recorded over the periods employees are

      required to render services in exchange for the

      awards.&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt; FONT-WEIGHT: bold"&gt;Income

      taxes&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt"&gt;Deferred

      tax assets and liabilities are recognized for the estimated

      future tax consequences attributable to temporary differences

      between the financial statement carrying amounts of existing

      assets and liabilities and their respective tax bases. These

      assets and liabilities are measured using enacted tax rates

      expected to apply to taxable income in the years in which the

      temporary differences are expected to reverse.&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt"&gt;We

      have net operating loss carryforwards available to reduce

      future taxable income. Future tax benefits for these net

      operating loss carryforwards are recognized to the extent

      that realization of these benefits is considered more likely

      than not. To the extent that we will not realize a future tax

      benefit, a valuation allowance is established.&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt; FONT-WEIGHT: bold"&gt;Basic

      and diluted net loss per share&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt"&gt;Basic

      loss per share is computed using the weighted average number

      of shares of common stock outstanding during each period.

      Diluted loss per share includes the dilutive effects of

      common stock equivalents on an &amp;ldquo;as if converted&amp;rdquo;

      basis. For the years ended March 31, 2013 and 2012, potential

      dilutive securities had an anti-dilutive effect and were not

      included in the calculation of diluted net loss per common

      share&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt; FONT-WEIGHT: bold"&gt;Recent

      Accounting Pronouncements&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt"&gt;The

      Company does not expect the adoption of recently issued

      accounting pronouncements to have a significant impact on the

      Company&amp;rsquo;s results of operation, financial position or

      cash flows.&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt; FONT-WEIGHT: bold"&gt;Reclassifications&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;&lt;div style="LINE-HEIGHT: 11.4pt; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"&gt;

      &lt;font style="DISPLAY: inline; FONT-FAMILY: Times New Roman, serif; FONT-SIZE: 10pt"&gt;Certain

      amounts have been reclassified from the prior financial

      statements for comparative purposes.&lt;/font&gt;

    &lt;/div&gt;&lt;br/&gt;</NonNumbericText><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>nonnum:textBlockItemType</ElementDataType><SimpleDataType>na</SimpleDataType><ElementDefenition>The entire disclosure for all significant accounting policies of the reporting entity.</ElementDefenition><ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 235

 -SubTopic 10

 -Section 50

 -Paragraph 3

 -URI http://asc.fasb.org/extlink&amp;oid=6367646&amp;loc=d3e18780-107790



Reference 2: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 235

 -SubTopic 10

 -Section 50

 -Paragraph 1

 -URI http://asc.fasb.org/extlink&amp;oid=6367646&amp;loc=d3e18726-107790



Reference 3: http://www.xbrl.org/2003/role/presentationRef

 -Publisher AICPA

 -Name Accounting Principles Board Opinion (APB)

 -Number 22

 -Paragraph 8

 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 4: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 235

 -SubTopic 10

 -Section 50

 -Paragraph 6

 -URI http://asc.fasb.org/extlink&amp;oid=6367646&amp;loc=d3e18861-107790



Reference 5: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 235

 -SubTopic 10

 -Section 50

 -Paragraph 2

 -URI http://asc.fasb.org/extlink&amp;oid=6367646&amp;loc=d3e18743-107790



Reference 6: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 235

 -SubTopic 10

 -Section 50

 -Paragraph 5

 -URI http://asc.fasb.org/extlink&amp;oid=6367646&amp;loc=d3e18854-107790



</ElementReferences><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>Significant Accounting Policies [Text Block]</Label></Row></Rows><Footnotes /><IsEquityReport>false</IsEquityReport><ReportName>NOTE 2 - SUMMARY OF ACCOUNTING POLICIES</ReportName><MonetaryRoundingLevel>UnKnown</MonetaryRoundingLevel><SharesRoundingLevel>UnKnown</SharesRoundingLevel><PerShareRoundingLevel>UnKnown</PerShareRoundingLevel><ExchangeRateRoundingLevel>UnKnown</ExchangeRateRoundingLevel><HasCustomUnits>true</HasCustomUnits><IsEmbedReport>false</IsEmbedReport><IsMultiCurrency>false</IsMultiCurrency><ReportType>Sheet</ReportType><RoleURI>http://www.enxnet.com/role/NOTE2SUMMARYOFACCOUNTINGPOLICIES</RoleURI><NumberOfCols>1</NumberOfCols><NumberOfRows>2</NumberOfRows></InstanceReport>
