How do you get the hidden wallpapers on Pokemon Diamond version?

Answer 1

talk to the TV producer on the third floor of jubilife TV and enter some thing

use this site 2 help you: http://www.filb.de/?site=games/nds/dp/box

(its in english) =D

^ who ever posted that THANK YOU SO MUCH! jrskirbybob

Answer 2

You are supposed to enter this website and type in your ID and it will generate words for you to say to this guy on the 3rd floor of Jubilife City Station.Don't worry, it will tell you.

http://www.filb.de/games/nds/pt/box

It might not work because it is sometimes under maitenance.

Answer 3

go to Google and type in platinum word generator then enter the words into the boxes that the guy in the jubilife tv station makes first of all go to the filb thing in google after you type in platinum word generator then you should be able to figure out the rest