Could you clarify your question a bit for me? I can see that you're having a problem with NVIDIA recognizing a DVI monitor as VGA but beyond that I can't understand what you wrote. Also, please confirm that particular monitor can be connected via DVI and work properly. You can do this through another computer if you have access to one.
Regardless of what you meant to say, most NVIDIA Control Panel issues will be solved by uninstalling the NVIDIA drivers and then reinstalling the most recent set of drivers from
http://www.nvidia.com