The Pokémon Dialga is not in either Pokémon White or Black, so you would have to trade with a friend of yours (which you can't do until the end of the game if it's a Pokémon that's not from the Unova region) or send Dialga to Pokémon White from one of your other games if you have one (Pokémon Diamond, Pearl, Platinum, and Heartgold and Soulsilver if you have a Dialga on one of those games).
You can't catch Dialga in Pokemon White. After you beat the the Elite 4, you can use the PokeTransfer to receive a Dialga from Pokemon Diamond, or Platnium.
link trade a pokemon from kanto hoen,etc for dialga
Transfer it from Diamond.
Dialga needs to be traded in from Diamond, Pearl, Platinum, Heartgold or Soulsilver.
you cant its impossible
yes
You cannot find Dialga (or, its my opinion). You would use Dream World, I wouldn't say.
The White 2 action replay codes for Victini and dialga cannot be obtain for free.
You gotta catch him in da ocean
You cannot. You must transfer it from other generation games
You canot a dialga egg in pokemon black and white.
Trade with someone who has Black 2 or White 2, or transfer it from a Generation IV game.