Howdy, howdy, howdy, Raileys! Welcome to the PokeCommunity forums, and it's absolutely wonderful to meet you, sport! :3
Sounds like the
Emulation & ROM Hacking board is just right for you then! If you head on over there, you can ask questions to the veteran ROM Hackers there about how to ROM Hack GBA games in general, or, you can take a quick look at the
Tutorials there, if you would like to find a guide to help you out on hacking, or from the hacking programs in general! I hope this helps you out, and of course you'll be able to meet some wonderful and nice people on this forum, and you can make loads of buddies! In fact, I'll be glad to become your PC friend too, in which you can send me a message anytime!
It's great to have you on here! Have a blast posting around the forums, and I hope that you'll enjoy PC in general! If you have any questions you can ask a member of the staff team, in fact, you can ask the general memberbase, and they would love to help you out too. See you again, and have a great weekend! <3