I just bought a Sapphire X1600 pro AGP and installed the new Catalyst 6.3. It seems I cannot overclock it with ATItools. All buttons are 'grey shaded', not usuable and the GPU speed is shown as 0. I activated the agp slot under settings in ATItools,nothing happens. I have the same Problems with the omega drivers. Memspeed is shown as 405, GPU as 0, not changeable. Any ideas what's the problem?