Put a Megaman Battle Network game into the GBA slot in your DS before turning on your DS. Once you can EM transform, go to the wave hole across from your house. EM transform, them go into the doghouse. (make sure the dog house is turned on first) You will see a floating ball. It will tell you that a thief has stolen data from scilab and you must return it. Pulse out, then go to vista point. EM transform here, then go into the statue. Defeat the navi there, you will get the mystery data. Return to the doghouse and give back the data. Megaman.EXE from the battle network series will come out, introduce himself, but hs to leave as fast as he came. Before he leaves, he gives you the BN buster, which fires twice as fast as your current one. (EM transform = turn into megaman)