Install NVIDIA drivers in Ubuntu 11.04

This is the easiest method I've found...

sudo add-apt-repository ppa:ubuntu-x-swat/x-updates
sudo apt-get update
sudo apt-get install nvidia-current nvidia-current-modaliases nvidia-settings

Reboot.

See this link for more detailed information including supported video cards.
http://www.webupd8.org/2010/06/how-to-install-nvidia-25635-display.html