Download Microsoft Virtual PC 2007 SP1 from Official.

Service Pack Update for Virtual PC 2007 qualifying Windows Server 2008, Vista SP1 and XP SP3

Download Virtual PC 2007 from Official Microsoft Download.

Download the full version of Microsoft Virtual PC 2007.

Windows Virtual PC (32-bit) - Free download and software.

From Microsoft: Windows Virtual PC (32-bit) is the latest Microsoft virtualization technology. You can use it to run more than one operating system at the same time.