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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 BAOuAXf8/eqxg3n7NwPigJjplCg7Fl2apYrb4I82M9HQUUlaqrAxilHJ1xr6gQLX
 OxB8qAtKyllSozPSlNrAFQ==

<SEC-DOCUMENT>0000950103-07-001657.txt : 20070626
<SEC-HEADER>0000950103-07-001657.hdr.sgml : 20070626
<ACCEPTANCE-DATETIME>20070626210108
ACCESSION NUMBER:		0000950103-07-001657
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070625
FILED AS OF DATE:		20070626
DATE AS OF CHANGE:		20070626

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GSC Acquisition Co
		CENTRAL INDEX KEY:			0001381117
		STANDARD INDUSTRIAL CLASSIFICATION:	BLANK CHECKS [6770]
		IRS NUMBER:				205779392
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		500 CAMPUS DRIVE
		STREET 2:		SUITE 220
		CITY:			FLORHAM PARK
		STATE:			NJ
		ZIP:			07932
		BUSINESS PHONE:		973-437-1000

	MAIL ADDRESS:	
		STREET 1:		500 CAMPUS DRIVE
		STREET 2:		SUITE 220
		CITY:			FLORHAM PARK
		STATE:			NJ
		ZIP:			07932

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MCKINNON RICHARD ANTHONY
		CENTRAL INDEX KEY:			0001344333

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33553
		FILM NUMBER:		07942328

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		214-522-9403

	MAIL ADDRESS:	
		STREET 1:		4404 DRUID LANE
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75205
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>dp06106_mckinnonex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2007-06-25</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001381117</issuerCik>
        <issuerName>GSC Acquisition Co</issuerName>
        <issuerTradingSymbol>GGA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001344333</rptOwnerCik>
            <rptOwnerName>MCKINNON RICHARD ANTHONY</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O GSC ACQUISITION COMPANY</rptOwnerStreet1>
            <rptOwnerStreet2>500 CAMPUS DRIVE, SUITE 220</rptOwnerStreet2>
            <rptOwnerCity>FLORHAM PARK</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>09732</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>22500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ David Goret</signatureName>
        <signatureDate>2007-06-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----