I was *very* happy with my HotRod controller but gave up on it a couple of years ago due to its PS2 keyboard/mouse only connectivity. Either you should rewire the HotRod using I-PAC or simply sell it on eBay and pick up a SlikStik controller. SlikStik uses genuine HAPP joystick and buttons and has an adapter to work with the XBOX.

http://www.slikstik.com/detail.aspx?ID=104