Original post- (I'm new to forums) There's been a thread on this on the NWN2 forums. Apparently there will be a fix in build 7122 onwards, although that's of little help. However, if you go to the forum someone's posted a work-around using a [COLOR=#0072BC ! important][COLOR=#0072BC ! important]file[/COLOR][/COLOR] from Vista, which seems to work for everyone who has tried it

Neverwinter Nights: No 3D Card in Windows 7

The summary is near the bottom of page 4 of the thread, and includes a download link to the required file

Hope that helps - it worked fine for me

Edit: OK, I just read the posts further up and you need to be a member of he Bioware forums to see the fix - ok for legit game owners, but others may have a few problems.
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To: WORDSMITH,
Thanx so much man i've been trying to fix this issue for ages so i could enjoy playing Neverwinter Nights 2. I tried your method above and it worked like a charm. i cant express how much time and sanity i have wasted searching forums and the like for any sort of fix and of all the things listed this is what finally worked for me. Im glad people like you are out there vigilantly pursuing means to help people like me out. thanx again!!! Peace!!!!!!!!!!!!!!!