Check out the Windows 7 Compatibility site: (There you will find out about hardware and software compatibilty.)http://www.microsoft.com/windows/compatibility/en-us/default.aspx
There is a pulldown from which you can choose "hardware" and "software".
There are also some great articles, instructional videos and such to help with your Windows 7 at our Springboard site:http://technet.microsoft.com/en-us/windows/default.aspx
In any event a lot of the times, Vista drivers will work in lieu of Windows 7 drivers, however, it's not 100%!
Microsoft Windows Client Support