Windows XP Mode
If compatability mode is not enough for you, check this out:
http://www.microsoft.com/windows/virtual-pc/download.aspx
You can install a Windows XP VM in Virtual PC on your Windows 7 workstation. The cool part is the integration. Install a Windows XP application, and it’s automatically integrated into your Start Menu in Windows 7.
I am so geeking out right now.
