i have a 8800 GTS 512 that i cannot overclock i tried using ntune and it crashes my computer, tried rivatune and that didn't work for some reason it says riva tune has not been tested with the currently installed display driver. i am running driver version 7.15.11.6928 windows vista 32 bit, and when i click customize on the screen NVIDIA GeForce 8800 GTS 512 / Generic PnP monitor the only options are low level refresh rate settings, low level desktop color schemes, and graphics subsystem diagnostics report. any ideas or reasons why it wouldn't be working?my forceware version is 169.28