I found the 93.71 drivers to be the most stable for my 7600gt. Coolbits will work with this driver version, but I still preferred to use rivatuner. So I recommend getting forceware 93.71 and overclock with rivatuner.
Ok I uninstalled the old driver, didnt have to use the driver cleaner, installed the driver that you guys provided, and was able to get into the "Manual Overclocking" page. I clicked on "Detect Optimal Frequencies" and it only pushed up the Core Clock Frequency to 567 MHz from 560, and the Memory Frequency to 1.41 GHz from 1.4. Should I put them up myself and see what happens?
BTW, GPU temperature (according to GPUZ) is at 56 C..