HexaDecimal

i just installed system shock 2 and it seems to be running fine until, i for example go to the option screen, or when the level changes, then all the colours just seem to screw up. i got the beta drivers for the banshee from the 3dfx site.....i also tried installing the banshee drivers from this site but i came across the problem of...something like "something.sys has to be in cache" or something like that thnx in advance