Balance Sheets (USD $)	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 1,358,000	$ 3,096,000
Certificate of deposit, restricted	200,000	200,000
Accounts receivable, net	922,000	759,000
Inventories and supplies, net	3,572,000	4,036,000
Prepaid expenses and other current assets	316,000	242,000
Total current assets	6,368,000	8,333,000
Long term accounts receivable	59,000	79,000
Property and equipment, net	825,000	928,000
Total assets	7,252,000	9,340,000
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	490,000	354,000
Deferred revenues	232,000	320,000
Accrued payroll and related expenses	203,000	266,000
Other accrued liabilities	506,000	517,000
Current portion of notes payable	62,000	62,000
Total current liabilities	1,493,000	1,519,000
Accrued interest payable	1,257,000	1,237,000
Notes payable, net of current portion	1,280,000	1,286,000
Total liabilities	4,030,000	4,042,000
Stockholders' equity:
Series A convertible preferred stock - no par value, 30,000,000 shares authorized; 2,642,000 shares issued and outstanding; liquidating preference at $0.60 per share as of March 31, 2012 and December 31, 2011	528,000	528,000
Series B convertible preferred stock - no par value, 5,000,000 shares authorized; 546,000 shares issued and outstanding; liquidating preference at $2 per share as of March 31, 2012 and December 31, 2011	1,094,000	1,094,000
Common Stock - no par value, 750,000,000 shares authorized; 42,765,000 shares issued and outstanding as of March 31, 2012 and December 31, 2011	145,380,000	145,380,000
Additional paid-in capital	9,547,000	9,408,000
Accumulated deficit	(153,327,000)	(151,112,000)
Total stockholders' equity	3,222,000	5,298,000
Total liabilities and stockholders' equity	$ 7,252,000	$ 9,340,000