sorry but jirachi doesnt have a place in this game but you can battle him/her using the wild Pokemon mod code
jirachi was previously only available for people who pre-ordered Pokemon colleseum
I don't no but i think so.
This is the code for mewtwo
25214170 0AB256A2
87890B58 2E56A57A
2E7B7A58 D0781742
D52902CA 343CF38A
no
Jirachi is a distrubtion pokemon that is not obtainable anymore unless by trading or cheating (gameshark)
you have to have a gameshark or action reader or an e-reader to scan it on
you get them at an event that is long over due OR you can gameshark to get them
Well you could trade with Pokemon colisseum or you can get a gameshark and input the code to get jirachi
go to mirage island seem de by:bubly
You must input the correct code in a gameshark to get jirachi, and then go to the space station, and from there it is pretty straight forward.
Celebi HFIF338ID3N38 Jirachi F7739HHD339G
No.
To get all Pokemon you have to trade with other gamepacks. Leafgreen, Firered, Emerald and Sapphire. I managed to do it, because one of my friends had cheated celebi and jirachi.
Cheating
Trade from Pokemon colosseum
find it.