Okay, finally got a Slot-2 device for my NDS, but...

Hey everyone, I've had an R4 in my NDS for a while now, but I just received a slot-2 device so I can play GBA ROMs on it as well. I got an ezflashV, but I don't know how to get GBA ROMs working on my DS. Also, after I get that working, is there a way I can use patch codes like Action Replay or Gameshark for the GBA games? Thanks!Update: Okay, I found some 3 in 1 GBA Flash card loaders so I've got the ROMs working, but I would still really appreciate the help with patch codes.Update Update: I'm now taking the SRAM files from my card and loading it with PC GBA emulators with patch codes, then moving the SRAM back to the card. If anyone has any better methods. Let me know.