what do you use to customize your mac os?

I use kaleidoscope which is a interface manipulator http://macintoshgarden.org/apps/kaleidoscope

I also use Power Windows, its to cool to explain http://macintoshgarden.org/apps/power-windows-245

FinderPop is good. I also use Action GoMac. Don't have links handy at the moment, though.

I use the Appearance Manager with 7.x for the OS 8 Platinum look.

Peace,
Drew
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Power to the PowerPC!