Quote Originally Posted by djaggar View Post
I'm following the instructions on the forum but when I come to Enable restricted extras I get this message:

Cannot install 'ubuntu-restricted-extras'

This application conflicts with other installed software. To install 'ubuntu-restricted-extras' the conflicting software must be removed first.

Switch to the 'synaptic' package manager to resolve this conflict.

And I already followed the directions to enable extra software repositories.
This is probably due to having an open source version of Flash (possibly gnash) which you should uninstall first.

However, the easiest way I have found to install nvidia is through the Hardware Drivers program which can be found under System -> Administration -> Hardware Drivers.