Yes it will. For example, if you have a diamond/pearl/platinum version game and trade a sinnoh Pokemon like I did with Torterra, it gets added on the national dex. Same thing if you somehow get a Typhlosion in D/P/Pt.
You can't go to the sinnoh region.
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.
There're 156. National Pokédex nos. 494 to 649.
As far as I know, the Sinnoh region is not included in Soul Silver.
i think banette cant be caught on pokemon soul silver, im pretty sure its a hoenn and sinnoh pokemon.
You can not. It is impossible for Heartgold and Soulsilver.
yes but only by trade
Sheildon is a sinnoh Pokemon. Sinnoh came out after Hoenn, so, sorry... you can't catch it in ruby (or Red, Blue, Green, Silver, Gold, Sapphire, Emerald, FireRed, or LeafGreen, Or any fake Pokemon games that came out before 2007)
go to sinnoh and die hope this works~
In one of the caves in the lakes in the Sinnoh region.
I don't think you can :P
You can find combee on some Sinnoh pokewalker routes, and in some places using Sinnoh sound.