[vesselle]

i have been able to fix it by changing my properties.
for Win 98/ME:
~ r/click on a blank area of your desktop
~ choose properties
~ click settings
~ click lower fight... advanced (did i just say "lower fight"? LOL! lower right is what i meant)
~ click performance tab
~ there's a slider that's moved to the far right
~ sliding it one click to the left will make adjustments for mouse related problems.
~ click apply, then ok and exit

usually clears up all problems with mouse movement in all games for me.

ps: if it still doesn't work, check your graphics card settings. sometimes having AA will do it. if AA is enabled, turn it off. if AA isn't enabled, turn it on.