Yes. But only a few such as Starly, Budew, Bidoof eg...
You can't go to the sinnoh region.
As far as I know, the Sinnoh region is not included in Soul Silver.
yes but only by trade
You can not. It is impossible for Heartgold and Soulsilver.
I don't think you can :P
In one of the caves in the lakes in the Sinnoh region.
go to sinnoh and die hope this works~
i think banette cant be caught on pokemon soul silver, im pretty sure its a hoenn and sinnoh pokemon.
You can't. New Moon island is in Sinnoh.
You can find combee on some Sinnoh pokewalker routes, and in some places using Sinnoh sound.
Goldenrod City in sinnoh and Lavender town in kanto
You have to have arceus to get to sinnoh but only once