Counterstrike OpenGL Problem.

HELP!!!

When I launch into counterstrike and try to go onto a server, I get an error message saying does not support OpenGL version. I had problems with my Vid Card and had to install a new driver, after that, I can’t get in. Anyone know what I can do to debug this? oh, everything was fine until i put in the new driver. which weirdly enough is the exact driver that i lost to begin with.