Mouse flicker/disappearence

Okay, I've tried quite a few things to fix this, running mouse in compatability mode(Haven't tried activating it in the short cut yet) and nothing seems to stop my mouse from completely disappearing, I can't even tack down when it's doing it because on the login screen the mouse cursor will reappear when I move the mouse alot but when I'm in game it appears when I'm moving it but not when the mouse sits still for a second or two.

System:
Windows XP
AMD Athlon 64 1.81 +3000
1.43 gigs of ram
Nvidia geforce 6100
Mouse Dynex DX-wmse

the drivers for my mouse are up to date, and I realize I'm probably just skimming the bottom on the system requirements. It didn't do this before Going Rogue came out and I've only ever seen something like this happen on my mothers machine but that was fixed by running in compatibility mode. Any suggestions on how I can fix this would be nice.