Well, they tell you how to install it on the page you link to:
STEP 3: Install
Type "sh NVIDIA-Linux-x86-1.0-6106-pkg1.run" to install the driver, then edit your X86Config file as appropriate. See the text README for more detailed instructions.
So log in at the text prompt, cd to the directory that has the file, and type
The README file they refer to should answer any questions you have about the process and any questions the installer may ask.