I apologize if this answer is too late, but you cannot TRADE Pokemon from any past games (Diamond, Pearl, Platinum, HeartGold, SoulSilver,) to any future games. while it is undecided about Pokemon X and Y, Pokemon Black and White 2 have it all figured out! In Pokemon Black and White 2, you can use PokeTransfer, which is a handy tool. I know that you may be thinking 'how do i get there?' well, you have to complete the main game first. but dont worry; it;s not that hard. After doing this transfer, ou can trade the pokemon from Pokemon Black 2 and or White 2 to Pokemon black and white, or their companions. Enjoy.
