Why Soul Silver is about the original Pokemon Silver game for game boy. Soul Silver has some more bonuses.
Migrate it from Pokemon (Hoenn version)
You can only go to Johto and Kanto in Pokemon Heartgold and Soulsilver
Pokemon HeartGold and SoulSilver.
No, you can not catch Phanpy in SoulSilver. It is a version exclusive to HeartGold.
HeartGold and Soulsilver
Mt. Silver.
whirl islands
You must trade it from Emerald Version.
heartgold and soulsilver
you register them in the unknown register
You can get it in Pokemon HeatGold and SoulSilver Version in the Lake of Rage.
You can only find Skarmory in the Pokemon SoulSilver version.