I'm not sure what I'm doing wrong.
I ran the tool to check that hardware virtualization is enabled, and it is (i7-2600).
I ran the proper version of the Virtual PC download (Windows 7 Professional x64) and I can see the Windows Virtual PC (KB958559) update in my installed updates list.
The .msu file runs fine without errors, but even after multiple reboots I can't actually find a trace of Virtual PC anywhere. There is nothing in program files, the start menu, or system32.
Am I missing a step?