Answer 1

I found a link that explains how.

http://www.serebii.net/emerald/regi.shtml

Answer 2

You have to read braille, or you can ask for what for the braille says and dump the fun of it, then once youve read it and you do everything it says, things will change, maybe involving 3 ruins cough couch...

Comments

a funny thing about it where the ancient ruins is there is a guy and after you battle him,he will say quote:i would like to  believe that it contains anchient ruins. but i see no entrance. even when you unlock he doors he will say the same thing! is he blind!the entrance is as clear as black and white! that is what i love about all of the old games. the dialogues never change!