Pre-cheat-enabled GBA ROMs?

Hola! :)
Okay, so, I really want to play pokemon emerald(among others) with cheats already activated(so I don't have to use another program before loading the game) using GBAexploader. Is there a program that will let me alter my roms so this is possible?If it has a button combination that lets me turn them on/off that would be cool too.Thanks! ;D

I know you can patch the games with cheat codes, but it changes the code of the game permanently. I don't think there is a way to make them enabled/disabled. Without using a cheat database of course. I think some flashcarts support cheat codes on Slot 2 games.

thank yee. That's fine. Now I just need to find a program to patch the rom with cheats..lol..i guess