Changes for 2.0: reduced size of bars and panels for better visability
MageFace UI Installation
Make sure you back up your "Interface and WTF" folders, then delete your old Interface and WTF folders. Extract the UI files to your World of Warcraft folder.
YOUR_ACCOUNT - rename to your wow account.
YOUR_REALM - rename to your toons realm name.
YOUR_TOON - rename to your toon that you want the UI used.
That Simple.
I use a lot of key bindings so all my bars are not visible.