***Back up your files before installing in case something goes wrong.***
Installation instructions:
1.) Extract the Interface and WTF folders to your WoW directory.
2.) Open the folder called WTF, then open the Account folder and rename the folder called "Your Account Name" with your account name.
3.) Open the folder you just renamed and rename the folder called "Your Server Name" with the server you play on.
4.) Open the folder you just renamed and rename the folder called "Your Characters Name" with the character you wish to use this ui with.
5.) ???
6.) Profit!