Baulders Gate 2 and GL

i know BG2 is alittle old but i want to get a character ready for Never Winter Nights. but when i went to play the game was running SO SLOW 8( , i have a P4 1.7 , 256ram and a geforce2 plus XP. when i played this game before i was using ME windows and it was fine with the 3D support. with XP i have to turn the 3D support off to get good fps’s . anyone able to help me out??? i’ve downloaded the newest drivers with no luck