CS Settings:
Operating System: Microsoft Windows XP Professional Service Pack 2
Refresh Rate: 85hz
Resolution: 800×600
Sensitivity: 2
Crosshair: Small, Green, Translucent

Settings:
Drivers: No
CPL Mouse Fix: No
Windows Sensitivity: 5/11
Enhanced Pointer Precision: No
Launch Options: -noforcemaccel -noforcemparms

I use the CEVO GUI