Things You'll Need
Instructions
Turn on both DS systems and load the respective games.
Travel to the PokeTransfer Lab on Route 15.
Talk to the PokeTransfer attendant and confirm that you want to begin the process.
Select the six Pokemon you wish to transfer to "Pokemon Black." Make sure Dialga is one of the six Pokemon.
Complete the mini-game by tossing Pokeballs at the six Pokemon as they jump from bush to bush. The rarer a Pokemon is, the faster it will move, so aim accordingly. Once all six have been caught, they will be transferred to your copy of "Pokemon Black."