I uninstalled from the add/remove programs menu just like the nVidia website told me to.
OK, heres a new problem. I've installed that and the first three !s have gone away but now theres a new one:
nVidia Network Bus Enumerator
How do I fix this one? I've just installed everything like you said so there must be another thing i need to install from somewhere is there not?
Also I didn't think I had a need to format as it just needed updated drivers. If I'd known I would mess up like this I wouldn't have bothered.