In SoulSilver, you can find Rayquaza in the Embedded Tower if you have possession of the Jade Orb.
EDIT: you can only get the jade orb from catching groudon and Kyogre. ~Riack~:p
You have to trade Kyogre from Pokemon Sapphire, and you must trade Rayquaza from Pokemon Emerald.
Try to trade for a heartgold Kyogre so you can get the jade orb, and find rayquaza.
Rayquaza is only in the Pokemon Versions: Ruby, Saphire, Emerald, Heart Gold, and Soul Silver. It is not in Pokemon Platinum.
moltrase,lugia,articuno,zapatos,groudon,ho-oh,rayquaza,mew two celibi.
Palkia holds the Lustrous orb, use the move 'Theif' in battle, or catch Palkia and retreive it.
in Pokemon soul silver you will find it (it is not in the grass)
You find Moltres in Mt. Silver.
You can not. There is no possible way of getting a Deoxy's in Pokemon Soul Silver.
You can find sunkern in national park
Pokemon
Mt.Cornet
you can not get rayquaza in dimond, pearl, platinum, black, and wite. you can get it in gold, silver, heart gold, soulsilver and emereld