you have to find the door to him. after being in the painting go to the right door, then your left, then your right and then left. you should then get to a long room with a bridge, cross the bridge and climb up the moving platforms, at the top there should be a hole, drop down it and you'll land in a small room, walk about the front of the mirror and big boo should appear. hit him 3 times to win.
Sigh, every forum I use turns into a war zone. I kinda miss this place. I might pop in every now and then, but there are so many scars already, I don't feel like I have a home here.
Keyblade Master: AKA Shinaka
April 2005- Feb 2007