thats the problem that is not the driver from my link, we didn't want windows to detect the hardware and use the driver that they think is best.
you have driver catalyst 7.11 which does not support AGP
it should be in a folder similar, maybe not exact to this C:\ATI\7-11_xp32_dd_ccc_wdm_enu_54440\7_11_xp32_dd_ccc_wdm_enu_54440.dll