update gpu driver in crossover

[fatality154]

When I started steam and was about to play counter strike source, it always displays a message saying my gpu might be out of date and tells me to update it. And when I play css I get 9fps all the time. I heard you can get up to 30fps with crossover on a macbook.

My macbook specs are 2.16ghz dual core, gma 950, and 1 gig of ram.