Need help findin a 3d video card driver update for my desk top pc?

I NEED A 3D VIDEO CARD DRIVER UPDATE FOR MY GATEWAY DESKTOP PC..I INSTALLED CALL OF DUTY AND IT WILL NOT RUN IT. I HAVE THE PROCESSER AND RAM SPEEDS REQUIRED|||hmm....would be nice to know what video card you have installed in the gateway....|||Find drivers here

http://support.gateway.com/support/drive…