Beat the first four levels (the first world) and then go to the toy box. There will be a little hole in the wall in the lower left corner. Enter it, and you will see a round table. Each time you beat a world 1-7, a new Toadstool guy will appear, and the princess appears after you beat world 8. The Toads let you print things! If you go to Peach, you can change the message that appears when you start up the game (now that you have beaten world 8.)