Hello there.
I read your question about inserting graphics In-Battle FireRed to HeartGold.
I tried to answer but it appeared that he could not comment until you have 15 posts (xD)
Look, check out this tutorial Whack a Hack, you think this might be of help:
Tutorial
The tutorial is in Spanish but you can translate it.
I hope you have served, if there is a spelling error, it's because I'm using Google translator lol
(I hope the tutorial after translation is understandable: P)