Instructions
Insert your "Pokemon Ruby" game cartridge into the Game Boy Advance slot of your Nintendo DS.
Press "Start" to load "Pokemon Platinum," and press "Start" again at the main title screen. Select your game file to begin your game.
Travel to the Pal Park located on Route 221.
Go up to the Pal Park attendant and press "A."
Select the six Pokemon you wish to transfer from the "Pokemon Ruby" cartridge to "Pokemon Platinum." Press "Confirm" to initiate the transfer.
Walk around the Pal Park until you encounter one of your Pokemon. Throw a Poke Ball at it to capture it. Repeat this step until you have caught all six Pokemon.