You probably already know at this point that Microsoft has introduced a new feature in Windows 7 called Windows XP Mode (XPM). If you are not aware, Windows XP Mode, an optional feature of Windows 7 Professional, Enterprise and Ultimate editions, helps small businesses upgrade to Windows 7 by providing a virtual Windows XP environment capable of running many Windows XP compatible business and productivity applications. With this you can now run your old XP applications on Windows 7 just like other applications.
Windows Virtual PC Evaluation Guide describes how to install Windows Virtual PC and set up a virtual environment, such as Windows XP mode or a custom virtual machine. This guide also describes how to try out some of the key features of Windows Virtual PC, including how to set up Windows XP mode in Windows 7. Download size of this guide is just 153 KB, and can be downloaded from the below link. http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=62cd2e63-52f8-4cf5-a7d5-7abaab270451#tm