your answer and more for AR codes...
@ Neoseeker.com
Action replay
Action replay is not an Pokémon item that can be obtained in Diamond.
You can use certain AR codes to get Kyogre in your party, or get a Pokemon Modifier code.
No
Go to neoseekers.com
no you have to get is from an action replay or go to a Pokemon event
You can't unless you Action Replay it. but you can get Groudon
action replay
its a cheat
action replay
Action replay.
action replay