well I decided to install the patches that were put out today for vista (x64) and once I restarted I couldn't get ati tool to work. In the hard ware manager I get this message on the ati tool driver. "Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)" I tried the disable reinable trick, and it didnt work. I've disabled UAC and Driver Signing and thats what got it to work in the first place, did it again and still doesn't work after new m$ patches. I tried reinstalling ati tool v.27b and still no worky. I'm removing the patches now to see if that helps.