Legendary Pokémon

Is it possible to send pokemon from SoulSilver/Heartgold to Pearl/Diamond using Wi-Fi and vice versa??

Yeah, I think you need the national dex in d/p

Of course you can(if you have a friend or have 2 DS).
^ It depends on the pokemon traded,I think.

Good thing we are all friends here

Yup .Except my nintendo wi-fi doesn't work with exclusive friend based play(wifi trades-battles-plaza mini games) but works with GTS,events,yu-gi-oh...

i wish i had a ds so i could trade and halp you T.T

Off topic:I have to use wi-fi 2 months now that i tried to connect with my router it says error code:52100.In nintendo site it says something to put same value of DNS

Try Bulbapedia!!! look up da numbers and in the bottom third there will be where to find them in all games!!!! ( I only just joined)