Looking for a PC game controller.

[O-D-C]

I dident know where to put this...PC or Microsoft discussion, mostly because I'm really interested in getting a Xbox 360 controller to play games on my PC.

Now the only game I would seriosuly use this for are FPS' and Knights Of The Old Republic and such, I want to know if it will work with most games. If it will work at all, or if anyone has any better suggestions.