Pain in the Ass
Apparently that can only be done in Gen V via Dream World. I wonder if anybody's cloned one ... at this point, G5 services like Pokecheck are now defunct so unless you're willing to edit one yourself there really aren't any options. (I'm almost willing to experiment on that option personally.)
I don't own a power save. The only reason I have an AR at all (and it's only good up to early Gen V) is so I can get the event pokemon in Platinum (arceus, shaymin, darkrai) because I have no other way to obtain them.