ATI tool has a beta version that runs in vista but didnt work properly with me. I could change everything except for clocks. Overdrive in CCC is only available if your card supports it. Not every ATI card can use it.
I use ATItool ver .27 with Vista and an 8800gtx. I have a default profile on start up that works fine with one big exception. I could find no way to get it to load on start up with UAC enabled. Like most people I've long since disabled UAC but it's problems involved a lot more than just ati tool.
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