First, and not to rude, but you might save yourself a lot of frustration by checking the damn tech support for NWN. I work in a tech support center and I can tell you that they will most likely have the best answers because they have dealt with all of these similar issues. Also, you paid for the product (I assume) so you are entitled to support. Here is the link for your situation:
http://www.atarisupport.com/newfaq/...mp;osType=WINXP&pageDisplay=MAINAnyway, the easiest way to update your GeForce2 drivers is to open up Internet Explorer and go to Tools-->Windows Update. Then, after you click Yes or whatever to initialize it, on the left you can click on the Drivers tab and then select the one from Nvidia Corp. Reboot is required.
-Jesse, Nerojb's (this poster's) friend.