How can you make Walda smile in Pokemon Emerald?

Say Pokemon (nomekop) backwards.

That's NOT right, use the website: Word.">http://www.filb.de/games/gba/emerald/Word.

Fill your own game ID (of Emerald of course) and what kind of sort box wallpaper you want and then click on ''Generate Secret Word.''

And you have the secret Word*

*You can get more box wallpapers from him