already done and didnt work. im picking up another stick today so shouldnt be a prob anymore. just wondering why

Could be corrupt memory. IF youre still into the problem then you could check out memtest86 and see if it finds any problems. http://www.memtest86.com/

Another possible issue could be an agp aperture size (if you are using an agp card) The aperture size is pretty much ram space set asive for the video card if it runs out of ram. Setting the size too high can cause problems such as this.

not corrupt memory already ran memtest. and my agp is configured for top performance and already been tested and works on every other game on this system, its an older style card altho im not sure if running 9.0c on a i think 8.1 card is good for it lol