AMD has decided to switch some of its older Radeons, from the 9000 series through the X1000 series, into what is calls "legacy" support status. The move means those GPUs will no longer be included in the monthly Catalyst graphics driver drops. Instead, for the time being, they'll receive driver updates (mainly centered on bug fixes) on a quarterly basis.

# ATI Radeon 9500 Series
# ATI Radeon 9550 Series
# ATI Radeon 9600 Series
# ATI Radeon 9700 Series
# ATI Radeon 9800 Series
# ATI Radeon X300 Series
# ATI Radeon X550 Series
# ATI Radeon X600 Series
# ATI Radeon X700 Series
# ATI Radeon X800 Series
# ATI Radeon X850 Series
# ATI Radeon X1050 Series
# ATI Radeon X1300 Series
# ATI Radeon X1550 Series
# ATI Radeon X1600 Series
# ATI Radeon X1650 Series
# ATI Radeon X1800 Series
# ATI Radeon X1900 Series
# ATI Radeon Xpress Series
# ATI Radeon X1200
# ATI Radeon X1250
# ATI Radeon X2100 Series

http://techreport.com/discussions.x/16524

They should have done that long ago... installed the latest drivers for a new XP SP3 install using a 9600XT, and the system now BSOD's upon boot.

boot into Safe VGA mode, remove driver, revert to older one

Yes, just haven't had the time to deal with it yet.