How do I turn mouse acceleration off? (raw input)

Hi I have a problem because mouse acceleration annoys me while i play games such as counter strike which requiers muscle memory. Is there any way to turn this off? i am using logitech VX revolution mouse and newest OSX.

Yes and I have tried anything in settings of games that I play. There are lots of people who are heaving exact same problem and they haven't found any solution solution except for instilaning Windows on their macs via bootcamp. I realy dont want to to that. Thank You for your help