Windows XP Mode – Run Windows XP from Windows 7 Desktop
Windows XP Mode for Windows 7 makes it easy to install and run many of your Windows XP productivity applications directly from a Windows 7-based PC. It utilizes virtualization technology such as Windows Virtual PC to provide a Virtual Windows XP environement for Windows 7.
Windows XP Mode provides a 32-bit Windows XP Professional Service Pack 3 (SP3) environment pre-loaded on a virtual hard disk. Client virtualization software, like Windows Virtual PC is a pre-requisite to use Windows XP Mode.