You will find here a driver that can suit your needs depending on your ATI Radeon device.

Note: It seems that this software hasn't been updated for several years - the version linked to this page is the latest to exist, so do not bother searching any further.

ATI Radeon XPRESS XPRESS 200/Radeon 1150/Radeon X1200/Radeon X1250 South Bridge Driver 10.2 is a driver that runs on Windows 2000 and XP. It is supplied with utilities to control compatibility and supports the Radeon XPRESS 200, XPRESS 1150, X1200, and X1250. You can download and use this product for free.