Enter a chat room in
PictoChat on the
date that you
entered as your
birthday in the
system settings. The
message "Happy
Birthday! Today is
[your name's]
birthday!" will
appear. The starting
sound of the DS will
also change on your
birthday.
With both a Game Boy
Advance and Nintendo
DS game inserted,
hold B when turning
on the Nintendo DS.
It will advance
directly to the Game
Boy Advance games
without the usual
warning screens.