Injecting files

Well as you can tell by the title, I am wondering how to inject files into the .rez files... Please tell me how to. Is there an injecter for it? Because I can't find it D:

Please no flaming.

oh, srry i dont know hmm contact Alexia12 or w/e his god dam name is, some one thats works in the rez alot :P

Okay thank you > w<