Wow, great job with the Halo 3 config! I just downloaded it now, but it already feels smoother and more accurate over my configuration. Halo 3 and L4D were the only FPS games that I had an issue configuring, so this'll really help.
CoD4/5 is incredibly easy to set up, but I guess one of these "Smart" mouse systems would make it easier for XIM newbies.