Ok so since my PC is not so powerfull, i decidet to look the net for something that may help me to bring the FPS up... so i am Counter-Strike fan too, and while looking in some forums i found this
http://forums.thezproject.org/index.php?showtopic=1441
That's Tweaked drivers for Nvidia, and i may say they work great... when i installed them i got 15-20 fps more... all the games... it's just great. If you have time, it's worth trying