Press the following buttons on the folder menu (where it offers Mission Select and Multiplayer Mode).

Hold R and Press Down C
Hold L and Press Right on +Pad
Hold R and Press Left C
Hold R and Press Right on +Pad
Hold L&R and Press Right on +Pad
Hold L&R and Press Up on +Pad
Hold L and Press Down on +Pad
Hold R and Press Left on +Pad
Hold L and Press Right on +Pad
Hold L and Press Left C