it will be on route 15
at the pokemon center
At the GTS in any Pokemon Center.
At your home
as soon as you find a Pokemon center.
You can trade it for any Pokemon. Just go to the Wi-Fi Club or something in the Pokemon Center. You can even trade it with a Magikarp!
Well, first and only you have to DIEDIEDIE
go in the pokemon center, in the middle section there is a lady. talk to her and go inside. a another person will need to be there to trade pokemon
It's possible, in an indirect way. You have to trade Pokemon from Pokemon Colleseum to Leafgreen, Firered, Ruby, Sapphire, or Emerald, then import to Diamond/Pearl/Platinum, then import to Pokemon Black using the Pokemon Relocater.
You trade 50 peolple and talk to a spy in Pokemon center castelia city
Go to the second floor of any Pokemon Center. The far right counter is for the GTS.
go to the poke center and upstairs go to the right lady
you can trade pokemon from heartgold to black but you can only transfer the pokemon in heartgold not trade it from black