Super Mario 64 DS Message Board  

its simple.there are actually 3 places to battle bowser:for the first battle you must have 20 stars.go up the stairs and turn left to the room with a star.the second you need 30.when youve beaten bowser 1 he give u a key.go in the brown door that u would see a giant boo.go down the stairs and you turn left to the room with a star.but first you need to do a stage.then hop in the pipe.the third u need 50 stars.beat bowser 2 to get a key.go through the door at the top of the stairs.go up the red steps and go to a door.run around until you see more stairs go up and open.to get warrio you need luigi.go to the room at the top of the castle where all the mirrors are. there should be power flowers on the ruins. grab one and go through the mirror. then the floating cloud guy will help u.and to get warrio use luigi grab a power flower and go through the glass.when you have the key jump into the portrait.there
NOTE:when u go through the mirror go through the door to get a star