Run the Configure.app, select video driver and click the Add button.
In the driver panel click the Install Driver button and select MatroxMGA.config.
The driver now supports two additional keywords that you should set in the Expert panel of Configure.app:
"MGA Memory Size" = "size in MB"
Tell the driver how much memory your card has.
"MGA Sync On Green" = "YES/NO"
Set the card in Sync On Green mode.
