I very much doubt that TrackIR would work with CG. For one, CG doesn't even support it (as far as I know) and also there are no 'free look' features where TrackIR might be used. So, even if you could get it functioning, what use would it be?
So your saying a game has to support TrackIR ? in order to use it... wow! That kinda sucks ! As simple as CG is... there is actually a look around and zoom function , I don't actually use it but the look around If I remember right is on the keypad left and right arrow. Can't remember the zoom, have to take a peak in the manual for that one. Also I can't use the TrackerIR anywayz on my Comanche machine... I'm running win98 with the Voodoo 3500. I was more interested on using it with my XP machine.
Have a great day !