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#11
I would say go to your local book store and search for a book on registry settings.
I think the registry would be better to learn for tweaking than group policy would be.
I'm sure you've heard "don't mess with the registry, etc, etc"
I just bought "Windows 7, the missing manual" from O'Reilly at Barnes & Noble. Not too much to do with the registry but alot of good info.