Nvidia Corp developed a Graphics driver for Linux. Its been out for a while, if you feel the urge to try it, here's a quick install howto.
Reboot to runlevel 3. No X Windows running. As root do:
# /sbin/init 3
If you cannot because of your display manager, login as normal, then kill running X. Normally use 'Ctrl-Alt-Backspace'. If that key-combo has been disabled, switch to a Console.
Login and give password then, switch to root user.
Next, install Module-Assistant
# aptitude install module-assistant
Setup Module Assistant
# m-a prepare
Install Nvidia driver using Module Assistant
# m-a auto-install nvidia
When quizzed on installing additional software, 'Y' for yes.