@ Winterfox
It is Windows XP Home edition.
@ Nero
The damn tech support of NWN is not replying. As I said above the suport of NWN sucks and I mean it. I have payed 40 € for their product and all the support I had from them was an invalid mail address.
I have updated my video card with the recent drivers and trust me I have rebooted my pc after that.