This is on their official Website, but lots of you may not know about this.
QUOTE
User Interface Customization tool
The World of Warcraft User Interface Customization tool allows users to tweak and customize the User Interface. We welcome our advanced users to download this free tool and explore the possibilies.
Repair Utility
We have a repair utility that can check your files and replace corrupted files as well. You can get the latest version available here.
Note: The utility is currently only available for Windows systems.
Note: With the release of 1.8.0 the repair utility (repair.exe) can now be found in the main World of Warcraft game directory on your hard drive
Important disclaimer:
Customizing the interface is a very technical endeavor, and you should not attempt it unless you have a good working knowledge of XML and Lua.
There is no official support for modifying the WoW interface. If you experience any issues with the interface after modifying it, you can disable any unofficial add-ons and changes in the AddOns menu at the character selection screen. Blizzard Technical Support cannot assist with setting up any kind of interface modification. However, you can find information for developing or installing add-ons in the UI & Macros Forum on the World of Warcraft website.
That said, you can download the World of Warcraft Interface AddOn Kit at the appropriate link below:
* Windows Version (1.50MB)http://ftp.blizzard.com/pub/WoW/othe...dOnKit_Win.zip
* Macintosh Version (1.69MB)http://ftp.blizzard.com/pub/WoW/othe...dOnKit_OSX.zip
Does anyone know how to work this thing? Anychance i can get some help