I'm using Pinnacle game profiler (just google it) and it works flawlessly with my 360 gamepad, so far i've used it for D2:ED, FOV, Risen and Fable to play with my gamepad and never had any problems with it.
It emulates verything from the keyboard keys to the mouse movements and scroll wheel.
There's a trial you can use and then decide if you want to buy it (i did).