In the mansion in rustboro,there is a girl in bed with loads of Pokemon..

You say something random to her, and the random word depends on your ID#. To find out what you need to say, go to this website:
Http://www.filb.de/?site=games/gba/emerald/word
Once you're there, do what you need to do (fill out your ID# and what you want the wallpaper to look like). Once you're satisfied and finished, click "generate secret word" and on the next page, it will tell you the word. Fill in what you need to say, and then the man will thank you (by making his daughter laugh) by giving you that wallpaper you made. Yep, the website acts as if it's psychic.

You go to a site where you put your trainer number.

:( :(I am sorry but that is classified :( :(. You have to be a member of this website- http://www.pokemon.jp/portal/index.cfm to get the name that gives you the special "Pika Box."

Please rate and verify this.

It's based on your chosen name and ID number, so there is no one specific thing to say that works for everyone. To find out what to enter into your game go to the following website to make Walda laugh:

Www.filb.de/games/gba/emerald/word.php

It won't make any sense,it'll just be a jumble of 15 letters, but it'll give you some cool extra wallpaper backgrounds for your PC storage. Enjoy!!

Give me your character's name (case-sensitive, remember that), and your Id Number, and I can get you that word. You get a new box background for making her laugh.