Microsoft Windows Virtual PC 6.1/ Windows XP Mode for Windows 7

Virtual PC is a powerful software virtualization solution that allows you to run multiple PC-based operating systems simultaneously on one workstation, providing a safety net to maintain compatibility with legacy applications while you migrate to a new operating system. It also saves reconfiguration time, so your support, development, and training staff can work more efficiently. Use Microsoft Virtual PC to run multiple operating systems at the same time on the same physical computer. Switch between virtual machines with the click of a button. Use virtual machines to run legacy applications, provide support, train users, and enhance quality assurance. Virtual PC lets you create separate virtual machines on your Windows desktop, each of which virtualizes the hardware of a complete physical computer. You can run multiple operating systems at once on a single physical computer and switch between them as easily as switching applications—instantly, with a mouse click.