Your FC, your Friend Code. You find it by starting up PBR and going to Colloseum Mode>Continue>Your Save File>Nintendo WFC>Friend Roster>The box to the right that says "Your Name's Friend Code"
I need to put yours in my roster and you need to put mine in your roster so we can battle each other. Oh, my Youtube account...well...it's been quite a while, but I think it was called "MattJ's mansion" or something stupid like that. I need to update it.
Well, hope we can battle soon. Good Luck!