nVidia Overscan Correction fixed in Latest Drivers
My solution for fixing overscan on nvidia cards is obsolete! I did find out just a few days ago that my solution does actually work.
The person that I was originally helping with this problem decided to give Linux another shot. He tested it out and reported that it did indeed fix his overscan problems.
However… for no particular reason I decided to check out the nVidia settings control panel again. When I opened it up in Ubuntu 10.04, I noticed this (and tested it to make sure it works, which it does):