How do you use toon town injector

If I'm correct, you'll need the inject.dll first.
You open Toontown and once you're onto the Pick-A-Toon screen, open injector. There might be a black loading screen and if I'm correct you'll see a foreign language? I'm not sure because I haven't used it in a while. There should be a button and a big box. Type your code in the box, and then press the button.