you don''t
You can replay the arceus event with action replay.
Arceus? By Event only.
No
any time
No, the movie Arceus that has been distributed in Japan is not the only Arceus that will work for the Heart Gold and Soul Silver Arceus event. That Arceus was special, because of the fact it unlocked a special Pichu event in Heart Gold and Soul Silver. Any Arceus will work for the event in which you can get a Level 1 Dialga, Palkia, or Giratina in Pokemon Heart Gold and Soul Silver.
Arceus is not obtainable in the Heart Gold and Soul Silver games.
get an arceus of platinum and trade to soulsilver then go to the ruins.
The Arceus Event is coming out Later in 2010 for the UK The date has not been annoced!
If you mean soul silver, it is yet unknown you have to trade the event arceus to it to get giratina, dialga or palkia.
Llex forest event, arceus event and the rocket backstory event.
you can't catch it, you have to get it from an event which has passed
wait for an event or trade him from another game