Quieres ser Beta Tester de Virtual PC 2007 (Beta)

The latest Microsoft hardware virtualization software is now available for download.
New features in Virtual PC 2007 include support for hardware-assisted virtualization technology and support for Windows Vista as a host or guest operating system or both.

https://connect.microsoft.com

Para más información sobre Virtual PC: http://www.microsoft.com/windows/virtualpc/default.mspx

Best Regards.