Just a reminder, World of Warcraft graphics are copyrighted, so if you "steal" any World of Warcraft models, you could have to go into some kind of legal process, like a considerable fee. Second, as someone else pointed out, the World of Warcraft models and graphics use different extentions and systems, so you would have to do something a bit more complicated than just ripping them directly from the game and importing them into the World Editor.