The Omega Drivers are compatible with all ATI Radeon cards:
(PCI, PCI-E, AGP, Mobility, On-Board, Retail, OEM or 3rd Party)

Radeon Mobility (M6 and up)
Radeon All In Wonder
Radeon 7k Series
Radeon 8k Series
Radeon 9k Series
Radeon x1k Series
Radeon HD2k Series

IMPORTANT NOTE:
Starting from Catalyst 6.6 and up, the following cards/chipsets (including Mobility) are no longer supported by the ATI or Omega Drivers:

Radeon 7k Series
Radeon 8k Series
Radeon 9k-9250 Series

For these cards please use the Omega Drivers v3.8.252 or older, thank you.

What's New in Omega Drivers?
v4.8.442

[*] Based on the Catalyst 7.12 Official drivers.

[*] Major video card support rewrite from scratch. This time every Radeon card under the sun should be supported, if the divers don't install on your card you either have a freak of nature card or a card too new that not even the ATI has support for it. ;) (Many thanks to all the people that sent their unsupported IDs)

[+] Added support for desktop HD3k Series and laptop HD2k Series.

[+] Experimental Gamma settings. Now whatever gamma setting you set on your desktop should pass on to your 3D applications. (tested with Adobe Gamma)

[+] The "temporary" fix for AGP cards still included. Waiting for ATI releases an official fix... *sigh*

[*] Upgraded installer to reflect logo/site changes.

[*] Upgraded drivers to v4 because of the previous details, plus thanks to a new install method I found, reduced the driver's size by a lot without loosing any features or options.