Re: New to Linux - nVidia problems
by default ubuntu does not use closed source drivers and the open source drive they use by default don't support 3d, hence your initial problem...
you need to remove the ubuntu nvidia packages and envy
sudo apt-get --purge remove nvidia* envy
will accomplish this, then install the drivers from nvidia, there are instructions already available in this forum, note that you can't use "Terminal" to do this, you must shut down the X server and will need some compilation tools installed, see the instructions.
my guess is that you've now tried 3 different versions of the drivers from 3 sources and there is a conflict going on.