Rage3D has issued a new version of their ATI Radeon tweaking utility bringing it up to version 2.8 beta.
Rage3D Tweak is a multi-language Radeon Tweaker designed to fit right in with the other ATI option tabs in the Advanced Display Properties accessed through the Control Panel. It allows access to Registry Tweak options, Custom Display Modes, Refresh Rates, and Overclocking all through an easy to use interface. New? Read More...

Full support for all tweaker functions in Windows XP.
Added Hot-key support for Gamma, Brightness, and Contrast settings.
Alt = Increase; Alt+Shift = Decrease; Alt+Shift+Control = Reset.
G = Gamma; B = Brightness; C = Contrast; Q = Quit.
When you set Gamma, Brightness, and Contrast with the hotkeys, your settings are restored each time you run a Game, or restore the Desktop!
Updated Interface.
Game and Desktop Refresh rate modifications supported for all Custom and Standard display modes in Windows 9x, Windows 2000, and Windows XP.
Added a dozen game profiles.
Removed Raid-On profile importer.
Added a few new tweaks.
All Custom Display Mode functions, G/B/C adjustment hotkeys, and some tweaks should all work with the Radeon 8500. Overclocking is Not supported on the 8500 yet. Download Now R3DTweak homepage