Use Catalyst Software Suite 10.2 (Released Feb 2010). This is the final stable version for XP. Windows Vista: Use Catalyst 10.2 for Vista (32-bit/64-bit).
Finding and installing drivers for the ATI Radeon X800 XL Go to product viewer dialog for this item. radeon x800 xl draiver skachat
Official drivers do not exist for these versions. However, you can try: Use Catalyst Software Suite 10