If you’ve got Windows 7 installed, the Windows Virtual PC for Windows 7 is now on MSDN subscriber downloads !!!
I had the Release Candidate (RC) installed, so had to uninstall that first and reboot before installing the RTM release. All worked perfectly, and my VPC’s from the RC also are working fine :)
If you need to uninstall the RC you’ll find it listed under the “Programs and Features” window from Control Panel. Click on “View installed updates” top left of window, and you’ll find it listed under “Microsoft Windows”