ATI CATALYST drivers provide fully qualified display support for Windows XP Media Center Edition 2004 systems with Radeon display cards, but requires a special version of ATI's Video Capture (WDM) drivers for Windows XP Media Center Edition 2004 systems with All-in-Wonder boards, which will be provided by your computer manufacturer.
News source: ATI
View: Catalyst 4.3 Release Notes
View: What's Fixed?
Download: Catalyst 4.3 Drivers for Windows
