See also Windows Roaming Profiles
http://windows.microsoft.com/en-US/windows7/fix-a-corrupted-user-profile
http://www.windowsnetworking.com/articles_tutorials/Customizing-Default-User-Profile-Windows-7-Part1.html
http://www.scriptlogic.com/smbit/article/manage-&-purge-local-windows-user-profiles
http://www.forensit.com
http://www.liquidwarelabs.com/products/profileunity.asp