hel;p

No probs...

'Pokemon Channel' is a separate game for the GameCube. It's a game for really young children but as a bonus, you can get a jirachi in it, that will transfer (not trade) to either Pokemon sapphire or Pokemon ruby... (the game consists of showing a pikachu television programs and going on bus rides to a few places and talking to other pokemon... It's pretty shallow)
I'm not sure if it works in emerald... You could try... But I don't think it will. Check the game box before buying.

You buy it, play it all the way through, and at the end, there is a mission where you go to the campsite at night and look through a telescope. There you see jirachi in the sky. Then later on jirachi comes to your house, and then a new menu option opens up that you can transfer jirachi to your gamepak.
The game cart I bought said that you could get jirachi right on the box... I'm hoping it wasn't just something they did in australia... Because otherwise I have misinformed you... But I got jirachi this way. And I'm pretty sure others have, also. And, if you have Pokemon sapphire AND ruby... Have beaten the elite four/champion (that's one of the conditions to transferring jirachi) and you want to play through Pokemon channel twice... I don't see why you actually couldnt get two jirachis!

I don't know what game mitsus talking about but I hear you could get him by collecting all the Pokemon in sapphire nd ruby