You can't. You need a Link Cable (or Wireless Adapter) to be able to trade.
actually i dont want to say this but NO
Try the GTS, or you can give your Trainer ID and have someone trade it to you. However the GTS is probably faster.
i dont think you can unless you dont trade it
You trade it from someone that has it. NO you dont! there is a event at gamestop open til the end of feburary for a celibi.
You dont!
you dont migrate from pearl you trade
Have someone trade you a Haunter edit: i found one in cliff cave so i dont know but yeah link trade a haunter.get somebody to trade you haunter or gengar
THrough the Time Machine in the pokecenter when it is fixed (Crystal). In Gold its just a regular trade. You will need a GBA cable, two gameboys/gameboyclolors, and both gold and crystal version. Dont exspect it to be easy though. YOu can only trade to Gold Pokemon that are on its pokedex (Kanto Pokemon) No trading Johto Pokemon. Witch is surprisingly frustrating at some points.
i dont think you can trade from sapphire.
i dont think it will let you . you have to be further in the game to get them sorry !
you dont you have to trade it from FR/LG
you dont. you have to trade from emerald.