yes but its a different device for each system
With a action replay you can store millions of codes but it you enable more than 4 at once your system will crash believe it or not!
No, Action Replay is not more efficient or "better" than any other action replay. It merely has been updated to fit the requirements to be used on a dsi.
u can use action replay but without action replay i dont think u can.
Yes
You have to use action replay.
technically you can't unless you use an action replay or a cheat but an action replay can ruin your game.
no, but if you have an action replay you can get as many as you want
None!
than you have not register the Action Replay software in to your computer.
You have to buy an Action Replay DSi, it's a totally new device. You can no more 'update' an ARDS to ARDSi than you can 'update' a DS console into a DSi.
because your Pokemon game is newer than your action replay
i would use an action replay other than that i dont know