you don't
I'm sorry but you cant capture a trainer's Pokemon without an action replay.
You use an action replay.
You can`t catch it in the wild you need an action replay
You can't.
no
No you cannot.
you can't without an action replay
not without an action replay and a Pokemon modifier code.
you must have action replay to catch darkrai, it doesn't goes without.
you cant
no you cannot catch arceus in pokemon black without action replay
to put it simply................... no