I assume you mean jirachi. Jirachi is an event pokemon and is no longer obtainable in the U.S. through any means other than hacking.
No.
Cheating
Trade from Pokemon colosseum
find it.
There is no jirachi's cave.
Jirachi is a distrubtion pokemon that is not obtainable anymore unless by trading or cheating (gameshark)
you need Pokemon channel for gamecube and you get Jirachi as a bonus.
you can only get jirachi by a special event, which is obviously long gone now.
i think you can only catch it in Pokemon emerald.
you have to have a chode
No, not without cheating.
If you have the Pokemon Colosseum Bonus Disc for the Gamecube and Pokemon Ruby or Sapphire (and a special cable), you can download Jirachi onto one of those games and trade it to Emerald. I also hear you can get Jirachi on Pokemon Channel and send it to your games. Other than that, you have to cheat. :(