By using the PokeTransfer located between Nimbasa City and White forest. NOTE: Pokemon that know HM attacks cannot be transfered
You need to trade or use poketransfer if you have one in pokemon diamond, pearl, platinum, heartgold, or soulsilver.
No, you cannot trade Pokemon from White version to SoulSilver. You can never trade Pokemon from newer versions to older versions as they are not capable of comprehending what those new Pokemon are. The reverse trade will probably be possible, however.
You must trade it from Emerald Version.
I am afraid so bro. Pokemon Black and White cant communicate with soulsilver heartgold diamond pearl platinum. so your Celebi is stuck on black
No, Soul Silver doesn't have the Pokemon data from White.
Nope. You must trade from Pokemon Diamond, Pearl, or Platinum Version.
you'll have to trade it over from diamond, pearl or platinum version.
You can 'MIGRATE' Pokemon but, I don't think that you can trade them because the sapphire version is for the GBA and Pokemon Soul Silver is for the NDS.
No, you have to trade it from white version
You Can Not Catch Celabi In Pokemon Firered Unless you trade with pokemon heartgold or soulsilver.
No
No, you don't need the National Dex to evolve Haunter in Pokemon SoulSilver. You just need to trade it with a friend then trade it back. Then, you have a Gengar!