Overclocking GPU in Vista

I have a 8800GTS 640 and I'm running Win Vista 32-bit. Trying to overclock my card. Did it fine in XP but not in Vista.

I've tried a few versions of ATI Tool, none work. nTune doesn't keep the overclock, resets upon reboot. I tried Rivatuner back in the day but it didn't work with the card either. What can I do?

get river tuner and make shure tht you make it *save* the oc
works for me

Can't you make a profile that loads the settings at Windows start up in nTune?

i dont think soi tried and failed

Follow the instructions here...

RT Vista UAC Workaround
http://forums.guru3d.com/showthread.php?t=226624&highlight=uac

... which also works w/ the latest v2.06 of RT. The download of RT includes a signed driver for Vista (RivaTuner206Drv.rtu). When asked during the install "Do you want to install available updates for RivaTuner?", hit the Yes button... which in turn will load the signed driver.

RivaTuner v2.06
http://downloads.guru3d.com/downloadget.php?id=163&file=7&evp=2d213e528fb556c354432a3976bff55a