Texture pack problem

[Legacy_Drethnor]

               I'm running NWN 1 on my old XP system, and I'm using a Nvidia 7600 GS card.
My problem is that the texture quality for the game is stuck in compatibility mode.
I have installed all the texture packs and selected them in the check box under the in-game video settings as well as
the initial configuration wizard. But it has no effect on the game with either texture pack I choose. Is this a driver issue??

Anyways any help would be appreciated!
               
               

               
            

[Legacy_Drethnor]

               Well by doing some research I found that it has something to do with the "Extension Limit" option in Nvidia control panel... setting it to "off" fixes the texture problem but causes graininess in some graphics i.e. the glowing nwn eye in the splash screen before the main menu, and the fps seem to drop a little...