Update: My XboX controllers are wireless so I borrowed one from a friend for testing purposes. That was a 'S" controller and it took a little research to find that the regular download won't work. Luckily, the beta does seem to work.
I got it to read the controller, which is good and got some response in UT2004, though I still have to go back and adjust all of the settings (the d-pad was the fire and I couldn't rotate the view).
So, progress made but still some work to do.
Also, Classic games (such as Quake 3 and Alien vs Pedator) are not supported.