Microsoft Virtual PC 2007 is a software to create virtual machines on your PC running Windows XP and Windows Vista.
The goal is to install multiple operating systems on the same machine. This can be useful if you want to test a program that works on Linux or else
Vista (64bit): Version Vista(64bits) here
A specific version for Windows 7 is provided by Microsoft: here
Latest update on November 12, 2012 at 10:54 AM.