This section describes how to install your Matrox card. For information specific to your computer, like how to remove its cover, see your system manual. 1 Switch to the standard VGA display driver If you’re running Windows 95/98/2000 on your computer, this step isn’t necessary.
http://techpubs.sgi.com/library/manuals/0000/860-0221-001/pdf/860-0221-001.pdf