(OR Creating a VistaPE USB bootable thumb drive with PGP by Varun Tansuwan)

VistaPE project main site: http://vistape.net/

WinBuilder project main site: http://winbuilder.net/

VMWare Server site: http://www.vmware.com/products/server/

Microsoft Virtual PC 2007 site: http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=28c97d22-6eb8-4a09-a7f7-f6c7a1f000b5

Windows 7 PE project site: http://www.boot-land.net/forums/index.php?showtopic=7250

Ultimate Boot CD For Windows: http://www.ubcd4win.com/

911CD forums: http://www.911cd.net/

Grand Stream Dreams page on VistaPE + PGP (by Claus Valca, the PGP integration part was particularly useful)
http://grandstreamdreams.blogspot.com/2009/03/custom-winpe-building-post-script-and.html

Site of many xVPE scripts http://maxrealqnx.boot-land.net/ has a Java script addon and many other useful scripts.