iMouseFix disables the mouse acceleration that is on by default on os x
SteerMouse is another program that allowws you to reroute some functions to all the mouse buttons.
(i kinda have a problem though, when ever i change batteries on my mouse it seems either the settings get turned off or reset, not sure but the sensetivity changes)
Do you guys have any free (or not) programs for mouse support on OS X? better yet anybody know how to replicate the settings that i have on XP Exactly on OS X? so far my biggest issue with OS X is the peripherals the system itself is great. the way you control it, bleh.
Post your ideas or give me some feedback if you find these programs useful. OR if you find the right settings on Steermouse to replicate the G7's sensetivity on XP