Hello all, pardon my newb-ness. I've recently bought a used copy of JK

F II and installed it on my rather old machine: Windows 98 SE, 128 meg RAM, NVidia Riva 128. HOW DO I CONFIGURE THE MOUSE FOR MOUSELOOK??? I have a Logitech mouse with a wheel, PS/2.
I've done it before, on a different machine (Win 2K, optical USB mouse) but for some reason I can't get it right. I have Mouse X and Y axis both Up/down, no reverse. It just doesn't work right at all.
Please help!
This game may be old but it RULES.