Re: GT 330M Driver problems
You have a conflict with the nouveau driver. So before you run the nvidia installer, do an rmmod nouveau and make sure nvidiafb is not loaded either.
If either one is compiled into the kernel and not as module, you probably have to use/build another kernel.
It's also possible that you can't unload nouveau, then you have to blacklist it so that for the next boot it's not loaded in the first place. Not sure what exactly needs to be done for that (depends a bit on the distro, too).