ATI 850 GTO Win XP 64 Intel Pentium 4 3.2GHZ E Processor 800FSB OCZ Platinum EL XTC PC2-6400 1GB 2X512 DDR2 CL4-5-4-15 240PIN DIMM Dual Channel Memory Used Drive Cleaner to uninstall old drivers. (yes correctly used, followed instructions) Installed the new 6.4 cats. Now when ever I reboot, I get this error message. You do not have enough privleges to change Catalyst Control Center settings. Please contact System Administrator to change settings. I am the admin on my comp. Just wondering if there is away to access the Control Center? If I try to acess it from desk top short cut, or from the program list. I get the same error as I do when system boots.