finding mew and a working wonder mail code for a music box

Wonder Mail unlocks pokemon that are usually only found in Pkmn MD Blue Rescue, such as Lapras or Aipom, to my knowledge. To get the Music box, you must defeat all three Regis in succession. If you lose the music box, you must defeat them again to recreate it. When you look for Mew on floors 36-99, do NOT use the Music Box. It only needs to be in your inventory to "catch" it. Also, to recruit any pokemon, you need:
Its Friend area (Southern Island in mew's case, other legendaries come with its friend area.)
The Leader makes the Final Attack. Do NOT let your Partner get that last hit.
The Target must be adjacent to the Leader. Make sure the Leader is directly next to the Target pokemon, Not diagonally, but North/South/East/West.
Also, Mew has a base recruitment rate of .9%, the Friend Bow and your Leader's level aids in boosting this, but your Rank has no affect on it.