ATI has just posted the official 5.1 Catalyst drivers to their site.
This official release addresses several issues including:
Men of Valor: Buffering issues are no longer noticed when playing the game under Windows XP with an ATI RADEON™ 8500 or 9100 series installed
Myst URU Ages Beyond Myst: Attempting to turn 180 degrees and head towards the barb wire fence displayed within the game no longer results in the system failing to respond. This issue is known to occur under Windows XP with an ATI RADEON™ X800 XT Platinum Edition installed.
Richard Burns Rally: Playing the game under Windows XP with an ATI RADEON™ 8500/9100/9200 series installed no longer results in the trees flickering
Sid Meier's Pirates: Enabling Anti-aliasing no longer results in video flicker being noticed when starting the game
ATI Catalyst 5.1 Drivers - Windows XP
ATI Catalyst 5.1 Drivers - Other OS