Instructions
Connect the "Pokemon SoulSilver" cartridge to the Action Replay. Connect the Action Replay to the Nintendo DS and turn the system on.
Input the code at the Action Replay's code screen. Press the "Start" button to continue the game.
Select your save file at the main menu. To activate the code, simply press and hold both the "L" and "R" buttons. You will now have all of the event items in your inventory.