Without ps/2 mouse wheel support using applications under OSX little terrible.
Scroll Wheel Patch
Logged In: YES
File Added: scroll.patch
OSX Driver patch
File Added: osx-drivers-mouse.patch
These patches allow using the scroll wheel on OSX from the X11 driver. It currently breaks OS9, so the patches aren't integrated yet. As soon as I get a copy of Codewarrior (hopefully soon-ish), I'll get the OS9 driver working as well. Probably for mol-0.9.73.