Ok well for your mouse in CS try searching in the forum cause it's posted a couple of places for the little commands You add to the executable, ( If you didnt try it yet)
I in the other hand had the sensitivity prob in CS and I fixed it by turing off Mouse accel in WINDOWS, and settting the sensitivity to max in XP, and the game seems fine.. Even more precise I find, smoother.
With the little commands, I find the game is way to sensitive, Or I just got used to the other way
Anyways try that before addind the lines.
And for your vid card, boot in safe mode, uninstall the drivers, reboot, apply colors to like 256 640X480 in normal mode, ( Dont install anything.
Reboot your computer, then install the drivers, if it dont work, do the process over, and try running it in 2000 compatability mode.
If it doesnt work, well well maybe You need to update you MOBO drivers.
-=Helly=-