On pokemon pearl i beat the elite four what's next?
There are so many possiblilities that you could do next. You can go to the all-new unlocked island. In order to actually do something on that island, you need to complete the Sinnoh pokedex. (if you have any question of where a pokemon is go to http://www.serebii.net ---- it has almost everything you need there.)Once you've done that, some random people that are blocking your path will move and you can get on with your life (make sure that once the people move you talk to the fisher guy that is past them because he will give you the super rod). So you can keep going with that. As for migrating pokemon, you need to complete the Sinnoh Pokedex to do that as well. You need a GBA game pack inserted in the DS's slot #2. On the main title screen of the Diamond/Pearl game, choose "migrate pokemon from ___"(whatever game you have). Choose the 6 you will migrate. Then, you go to Sandgem Town, and keep going down on route 219. Keep going to route 220 and then to route 221 (yes it's kind of a long journey i know). Keep going until you hit an island. right on the island is the pal park. Enter the park and talk to the guy at the entrance and he will let you catch the pokemon you migrated. Once you have been to the pal park once you will be able to Fly there. I hope this answers your question.
Okay i have a question on pokemon soul silver and ruby red?
If you're talking about Ruby, just put your Ruby game in your ds GBA slot and start Soulsilver. on the main screen, scroll down and you should be able to find a tab that says migrate from Ruby. Choose your six pokemon to migrate, makig sure they are not holding any mail, or learn HMs, but other than that they can hold almost anything you want. Once that's done, you won't be able to get the transferred pokemon back into your Ruby version or be able to trade another set of six until the next day. Yes i know it suckes but thats how it is. Then go to the Pal Park in Fushia and get your Poke's back! Hope this helps!!