If you want Windows Virtual PC you should have processor in your computer which is capable of hardware-assisted virtualization. Also in your BIOS you should have HAV turned on for the following: AMD-V™, Intel® VT or VIA® VT. This is because if your computer does not support HAV, then you cannot run Virtual PC. This is the first step for running windows Virtual PC.
Microsoft has a tool to check this called havdetectiontool.exe(180 KB). The tool not only checks this but also finds whehter it is enabled in the BIOS.
You can download this tool from here:
The HAV detection tool ONLY supports the following operating systems and editions/versions:
• Windows Vista Service Pack 1, 2 (Home Basic, Home Premium, Business, Enterprise, Ultimate)
• Windows XP Service Pack 3 (Professional), Windows XP Service Pack 2 (Professional)
• Windows 7 (Home Basic, Home Premium, Professional, Enterprise, Ultimate).
I checked this on my Toshiba Satellite P775. Here is the result from running this executable on the Windows 7 (x64) Ultimate.