Pokemon Game Boy T-shirts How Can I Trade Pokemon From My Pokemon XD Game To My Pokemon Game For Game Boy Advanced?

How can I trade pokemon from my Pokemon XD game to my pokemon game for game boy advanced? - pokemon game boy t-shirts

I have Pokemon XD for GameCube and Pokémon Sapphire, Silver and Fire Red for Game Boy Advance. I also have the port for the Game Boy Advance GameCube. Just as the trade between the games?