1. Make a backup of your WTF, Interface & Fonts (if you have one) folders.
2. Download and extract my UI to your desktop.
3. Go into the WTF folder, enter the Account folder, and rename the folder called YOURACCOUNTNAME to your own account name all in caps.
4. Enter the YOURACCOUNTNAME folder and change the folder called YourServer into your server name.
5. Enter the YourServer folder and Change the folder YourCharacter into your characters name.
6. Put my WTF, Fonts and Interface folder in the place where your own folders used to be.