How do I apply a guikit ?

I'm a Mac User

MacBook Intel Core duo - 10.4.7

There is any software for apply theme at my mac ?

till now ShapeShifter isn't updated as Universal app, it's still PPC oriented. So you'll have to wait till ShapeShifter gets updated !!

guitweak is now universal.

this program is difficult........i can't able to apply the theme........

Shapeshifter beta is now universal.