Instructions
Place your copy of Pokemon Soul Silver into your Nintendo DS and start the system. Press "Start" when prompted at the title screen and select "Continue" to begin the game.
Press "Start" to bring up the menu. Select Trainer Card to view your name and Trainer ID.
Go to www.filb.de/games/tools/aikotoba and enter your name and trainer ID. Select the version of the game you own, in this case Soul Silver. Press send.
Travel to Jubilife City and go to the third floor. Talk to the TV producer in the southern part of the third floor and enter the corresponding secret phrases to receive your backdrops.