Not sure about portal, but I've used a PS3 controller with software that emulates xbox 360 controllers. It was fairly difficult to get set up and then running e

Not sure about portal, but I've used a PS3 controller with software that emulates xbox 360 controllers. It was fairly difficult to get set up and then running every time but once it was running it was rock solid. Played my way through Lara Croft: Guardians of the light with it. I think it was this: http://motioninjoy.com/download http://motioninjoy.com/download