Possible Duplicate:
does windows7 come with something like virtualpc built in?
Does windows7 have xp virutalization built in or do I need virtualPC?
Possible Duplicate:
does windows7 come with something like virtualpc built in?
Does windows7 have xp virutalization built in or do I need virtualPC?
You need to download the XP Mode RC.
You need to download it, and it's only available for Professional and Ultimate editions.
From the Windows 7 website:
With Windows 7 Professional or Ultimate, you’ll be able to run many productivity and business programs designed for Windows XP. Some additional software will be necessary and it will be available free-of-charge as a download from Microsoft.