Oh yeah. I know about those cards a little. Get the latest driver from their site for you card. Get 7 driver and if not then Vista.
Install using the device manager for each card the same way:
Update driver software. Browse my computer. Let me pick. Have disk. Browse. Navigate to and double click on the .inf. Hit ok. Hit next and let it install.
After doing for both cards, reboot and then choose an Aero theme.
The card s kind of on the rare side. If you need more help, search my screen name on here and Matrox. You'll find previously successful examples. Or let us know here too. Good luck.
If you have any exclamation points in the device manager, let me know.