You can't go to the sinnoh region.
As far as I know, the Sinnoh region is not included in Soul Silver.
You can not. It is impossible for Heartgold and Soulsilver.
In one of the caves in the lakes in the Sinnoh region.
you have lear to back flip
There is no sinnoh region in heartgold or soulsilver, it is only Johto and Kanto.
you cant get to the sinnoh region in Pokemon hart gold or soul silver but you can get the starter Pokemon at slip co (i think its called) once you done all gyms and defeated red (the Pokemon with emerald version).
NO! Pokemon SoulSilver Version is the exact same thing as Pokemon Silver Version. Only all the Kanto, Johto, Hoenn, and Sinnoh region Pokemon are in there.
you can't you have to trade
Because Platinum the region is Sinnoh, you can't get Charmander. On Heart Gold and Soul Silver, you can go to Johto and Kanto. But no Sinnoh for Platinum.
Sinnoh is not a place that is possible to visit in Pokemon Emerald. It is a region, but only available to explore in the Pokemon Diamond and Pearl games.
yes but only by trade
Buizel is a Pokemon only found in the Sinnoh region, Pokemon Soul silver is in Johto. The only way to get a Buizel is to catch one in Diamond or Pearl and trade it.