Just got word that Uriel has compiling a bunch of useful ATI files into one large iso file that comes in @ 300megs. The CD contains the following:

Latest MMC + DVD.
Latest Hydravision.
Latest WDM.
All ATI-specific demos I could find.
Most of the tweakers I could find.
Fixes and other stuff.
ATI screensavers + more. Download ATI Mega CD @ Rage3D.com