If you are running Ubuntu, any flavour, you should install the Nvidia driver using Synaptic Package Manager on your system.
Ununtu supplies all the files you will need to make it work. I would not recommend you try to install the driver from Nvidia. It can be made to work, but will take a lot more effort on your part.
Do not try to follow a HowTo for another distro. Suse uses a different package manager, called Yast. You will not find that in Ubuntu.
You will need an internet connection working. You need to configure Synaptic. Under the tab marked settings, click it, and then Respritories. The "download from" allows you to select the country closest to where you live, then pick the 'main' 'universe' 'restricted' and 'multiverse'. That should give you enough to update, install what ever you want or need.
There should be a Nvidia-current package. Select and install it. Not sure what other things will need to be installed for your card, the system should figure out what else it needs. Let it install all packages it wants to. There are things like kernel headers you will need.
My Nvidia hardware is on a SLackware system. The method to install is different on Slack. I used Mandriva, and now Mageia, they have the drivers in the repos. The method here is more like Ubuntu.
If you have problems, post back.