what do you need:
A ps3 controller
A usb port
and optionally a bluetooth adaptor (yes you can play it wireless

Alright then, go here : http://www.motioninjoy.com/" onclick="window.open(this.href);return false;
and download the latest version of their program. (check here, both 32 and 64-bit versions available : http://www.motioninjoy.com/download" onclick="window.open(this.href);return false;)
Install instructions here : http://www.motioninjoy.com/help/sixaxis ... structions" onclick="window.open(this.href);return false;
suggest you guys give it a reboot once you get it all installed
Besides using it on the computer you can also emulate a 360 controller . All buttons are right on, vibration works, tested it with Beat hazard and Batman Arkham Asylum