An action replay is not an in-game device. It is an actual piece of hardware that you buy at your local electronics store (not all have it), where you enter codes using that device to hack your game.
You would have to go to the store and buy a chip.
There is not a known Darkrai Action Replay Code for Pokemon HeartGold and SoulSilver yet.
With an action replay.
buy it!....
action replay
you press action replay codes on Pokemon soul silver
action replay or trade
Pokemon SoulSilver is by far better. The action replay only works with games. If you do not have a game (i.e. SoulSilver), then it cannot work.
Yes it does. On Action replay DSi it does have Pokemon Soul Silver, but on Action Replay DS it doesn't.
No.
on eBay
Yes, yes it does.
buy it at the store