You can get the national dex from the professor after you have seen every Pokemon in sinnoh.
after you beat the Pokemon league you need to finish the pokedex and thengo and see prof. rowan in his lab, prof oak, will then give you the national pokedex
see all the Pokemon in sinnoh region go to pro birch and he will give you national dex
you need to beat the game once.go to the sandgem town.talk to professor rowan and he will give you pokeradar and national dex
no he doesn't give you a letter you had to have gone to the 2007 Pokemon event or have run through walls cheat.
You have to beat the pokemon league first then someone will give it to you at your house then the professor will update your Pokedex to a national Pokedex.
You have to get the National dex and Beat the Pokemon league. Then, give the ruby to celio and he will give you a Rainbow Pass. Allowing you to go to the sevii islands. (1 - 7 islands)
After you get the National Dex
He gives you the National Dex.
um the galactic boss will give it to you after you beat him in the veilstone building
First, beat the gym at Veilstone. Either Cialia will give you it about now, or she will give it to you after you beet in Pastoria.
Some certificate after you complete the National Dex.
Ask how to beat Poptropica Giza. It will give you a good answer that i used.