How do u talk to people in the underground pokemon pearl???

Question

i need to talk to people in the underground

Answer 1

you have to be around other people who are playing diamond or pearl, then your ds will do this wireless link thing and the people will appear in the underground. after that you just have to find them and press a next to them.

i'm guessing you're trying to get spiritomb?

Answer 2

Just go up to them and press A.