Download Pokesave on your computer to custumize your hacks for Pokemo Diamond/Pearl.
Action replay
Action replay is not an Pokémon item that can be obtained in Diamond.
No
Go to neoseekers.com
no you have to get is from an action replay or go to a Pokemon event
action replay
its a cheat
action replay
Action replay.
action replay
action replay
Find an action replay code and program it, that's how you get many masterballs on Pokemon diamond action REPLAY. ;)