How can I delete my old Nintendogs game and start a new one?

How can I delete my old nintendogs game and start a new one? like how do I start all over at the beginning?How can I delete my old Nintendogs game and start a new one?When on the title screen, press L, R, A, B, X and Y all at the same time. I think you get a warning screen where you then have to confirm the delete... can't remember exactly as it was a long time ago when I last did it.How can I delete my old Nintendogs game and start a new one?reset?