On the top floor of the Pokemon center.
All you have to do is go to a Pokemon center and trade using a GBA link cable. Note that this does NOT work in a DS, so don't try to trade that way. In case you don't already know, some Pokemon will actually evolve when traded, so trade often!
You have to trade it from a different game or you need action replay for the cheat code. You can trade if from Pokemon Emerald, Sapphire, and Ruby to Pokemon migration center.
You can trade from Sapphire anytime. However if you are trading to or from Leaf Green, you have to have beaten the Elite Four first, before you can trade with Ruby, Sapphire, or Emerald.
you need the ruby and the sapphire on island 1 so the machine works and you can trade to ruby and sapphire
You must deliver the Ruby and Sapphire item to Celio at the One Island pokemon center in Leafgreen first. Become part of the Hall of Fame in Sapphire next. Now you can trade anytime, go upstairs in a pokemon center and talk to the lady who leads you to the Trade Center (middle lady for sapphire, right lady in leafgreen). Link up and you can start trading.
On the top floor of the Pokemon center.
you don have to
Once you deliver the ruby and sapphire to celio the machine will be in operation this means you can go upstairs in any Pokemon center go to the trade center and trade between ruby, sapphire and emerald version.
you both have to go at the middle part at the second level on the Pokemon center
All you have to do is go to a Pokemon center and trade using a GBA link cable. Note that this does NOT work in a DS, so don't try to trade that way. In case you don't already know, some Pokemon will actually evolve when traded, so trade often!
have a gba cable,go to the top floor,go to third counter,push "trade center" and have someone else with Pokemon Emerald,Ruby,Sapphire then trade. "but will save before entering."
Bring it back to the center on one island by talking to the guy in it. After you can trade with Pokemon Sapphire
i dont think you can trade from sapphire.
you don't use the machine if you gave the ruby and sapphire already just go up the esculator at any Pokemon center and use the GBA link cable to trade with ruby and sapphire, must have national dex. Note: to trade with emerald you need a wireless adapter for both systems and go up the esculator at any Pokemon center and go to the direct corner (far right) and choose trade center and there you go.
That's not possible because gold was not made to trade with sapphire because sapphire was made after gold.
No you cannot trade from Sapphire to Platinum. The closest thing that you can do to that is migrate from Sapphire to Platinum.