It is just outside of Black City, just exit to the left and follow the road.
Transfer using Relocator or poketransfer lab.
The PokeTransfer machine is in the PokeTransfer Lab on Route 15.route 15 is near black city (pokemon black) or white forest (pokemon white) and Marvelous Bridge
You can use the PokeTransfer lab to transfer them to Pokemon White, or another copy of Black.
No you can't trade with black to diamond but you can trade from diamond to black using the poketransfer lab. (you will have to have beaten the game before you can use the poketransfer lab). Hope I helped this is luke127 signing off.
You need 2 DS consoles to use the PokeTransfer lab.
Yes! you poketransfer it from a Gen.4 game. Note. Poketransferrals can only be done at the poketransfer lab, abvailible only after seeing the credits at least once.
Poketransfer
Poketransfer.
If you complete Pokemon Black, you must find your way to the PokeTransfer lab. This will enable you to transfer Pokemon DS Game Pokemon to Pokemon Black, though you will need two DSs to complete the process. So basically yes.
Poketransfer
After you get the National Pokedex, you are able to use the PokeTransfer Machine in the PokeTransfer Lab, which is on Route 15.
You use the PokeTransfer Lab in route 15. Although you have to beat team plasma after you beat the pokemon legue 1ce.