in golden rod city to the left of the radio tower and magnet train
yes
Yes, but you need Wi-Fi.
Yes by finding someone who has pearl and then trade with them.
You can trade Pokemon in the union room, the basement, and even in Goldenrodcity at the GTS place.
you go on the gts and get off then go on gts with the other game then trade with yourself ther
For a shiny eevee, sure. put it on the GTS.
trade them from Ruby, Emerald, or Sapphire, or... trade them from a friend, or... get them from the GTS.
if you mean 'can you trade with someone NOT on soul silver' yes as long as it is a ds exclusive Pokemon game
the only way is to get porygon in soul silver is GTS or the arcade game, and get 9,999 points
in golden rod city
It is one of the three starter pokemon you choose from at the very beginning of the game. if you didn't choose it, there is no other way to get it unless you ask for it on the GTS
go to poke.check on your computer sign up and you can get any pokemon you want.You have to use the GTS(the trading center)