What do you tell walda's Dad?

You don't tell him anything specific. You have to go this website to find out: http://www.filb.de/games/gba/emerald/word.php?lang=2. You fill in your ID and the wallpaper you want and it gives you a word. You tell the dad the word and he gives you that wallpaper you chose. It's really cool. Rate this answer.

This generator should help you (to translate it into English, there's a link at the top of the article).

A word of advice (search the forums of this site) alot of us have answered this several times!!!

You have to go to http://www.filb.de/games/gba/emerald/word.php there you put your trainer # and choose a wallpaper thing.

Hope I've Helped!

You don't tell him any specific word. Goto Http://www.filb.de/games/emerald/word.php?lang=2
and tell him the code you get. First, when you go on the website, change the language to English if it isn't.

Enter your trainer ID (from your Pokemon emerald game) in the top space where it says so. Create the wallpaper you want using the tabs (the ones with (jap) next to them don't show up on the actual wallpaper). Click on the 'finish' or 'create' button or whatever and a new page will come up. You should see a code on this page, which is a bunch of random letters and numbers.

Tell the code to Walda's dad, including the capital letters. It will make Walda laugh and her dad will give you the wallpaper you created on the net for your PC in the PokeCentres. Believe me, this works.

Hope this helps.
Psychic88Fne