Where do you type cheats for Lego batman ds

action replay codes you can find all over the web but there are only 5 codes that are for ds and you have to do them at the main menu the codes are :

3 million studs: Up,Up,B,Down,Down,X,Left,Left,Y,L,R,L,R,B,Y,X,Start,Select

1 million studs: X,Y,B,B,Y,X,L,L,R,R,Up,Down,Left,Right,Start,Select

Unlock all characters: X,Up,B,Down,Y,Left,Start,Right,R,R,L,R,R,Down,Down,Up, Y,Y,Y,Start,Select

Unlock all Extras: Up,Down,L,R,L,R,L,Left,Right,X,X,Y,Y,B,B,L,Up, Down,L,R,L,R,Up,Up,Down,Start,Select

Unlock all episode and All free play modes: Right,Up,R,L,X,Y,Right,Left,B, L,R,L,Down,Down,Up,Y,Y,X,X,B,Up,Up,Down,Start,Select

P.S. up,down,left,right are all done on the D pad (the thing thats shaped like a cross)