What you may want to do is this:
uninstall the card and any files associated with it.
then go to display,and change your adapter to "standard display adapter".
now go to device manager,click on vid card and update drivers.
point it to the 1.07.00 drivers.
and everything should be fine.
thats exactly how i did mine and have had no probs.
if your still having probs with certain games,check out this site.
Tweak3d Voodoo3 info
Hope some of this helps out.
Good luck.
Shawn.