You use an action replay.
You can't, but if there is any other Pokemon you are looking for, check serebii.net, that's what I always use.
you need to have action replay
You can't without an action replay
where to find a azure flute without action replay and cheating in pokemon platinum
only with action replay!!! there is no way without action replay
Mystery Gift.
You can't.
you use an action replay
You either have to migrate Pokemon or receive them in trades
You can't.
Sadly, no.
You don't