Can you trade between soulsilver and pearl on the global trade station?

Answer 1

Yes you can. Here's how: Requirements: *Complete Sinnoh Region Pokedex (which after the elite 4 when you go to the battle tower can easily be done) * Beat the Pokémon league * Pokemon Ruby, Sapphire, Emerald, FireRed or LeafGreen As soon as you've done all of this, go to Sandgem Town! Then go Prof. Rowan's lab. When you go inside, talk to him. He'll say some boring things, and then Prof. Oak will walk in (believe it or not) make sure you read what he says. That'll tell you how to get to Pal Park, where you get pokemon transferred from games like: Ruby,Sapphire,Emerald, FireRed and Leafgreen. When Oak leaves, Rowan will say some few things and then he'll be done talking for good. When he is done save your game and turn back on Diamond/Pearl. When you do, on the screen where you saved file, new adventure and that stuff is, your gonna see something you have never seen before. An option that says Miagrate from (name of game). When you select that, hit yes and ok. Then choose 6 pokemon to transfer. This can only be done every 24 hours. After you choose your 6, your going to be taken to the screen where Dialga or Palkia is. Just select your save file. When you do, go to the beachy area at the bottom of Sandgem town and keep Surfing right. When you do you'll get to some land area that is a little like Ever Grande City. And you'll have to fight a couple of trainers (2 or 3) and you'll see this building. GO INSIDE! There you'll see Prof. Oak again and he'll say I'm going to Eterna City. Then he leaves. Talk to the guy near the counters and soon you'll be inside. The balls are like master balls, so no need to freak. And the rest is self-explanatory. Just roam around until you find the 6 pokemon you transferd.

Answer 2

Yes. Any 4th Generation games can communicate through the GTS on Pearl, Diamond, Heart Gold, or Soul Silver. You can also trade and communicate through Union and Colosseum in any Pokemon Center on either of those games.