If you install Windows Vista or 7 from CD, it will recognize your graphics card and install a driver for it that was current at the time. Assuming your graphics card isn't a completely new platform, you will get full color and resolution on first install (though maybe not with up-to-date drivers).

Works on every computer I've clean installed for both Vista and 7.

+1. GPL'd software can be ethically sold if the source is available. Head out to Fry's and check out the shelves of Linux distributions and OpenOffice packages available for sale even though they are free to download.

It's been like that since I can remember.