You can't unless you have the mystic ticket and aurora ticket which is impossible to get without cheats.
There are only three ways to get the Aurora ticket. One is through a special Pokemon event sponsored by Nintendo. These events are at either Target or Gamestop, and require only your game and game system. The second way is through cheats/gameshark, and the third way is to get an e-reader and scan the real life card into your game.
No, the Aurora Ticket cannot be obtained through Pokemon Channel.
You need to have the Mystic Ticket or the Aurora Ticket from the Mystery Gift event, which at this point, won't be going on anymore, most likely. So, at this point in time? Cheat. That's all that's left to do.
To get Deoxys, you need the Aurora Ticket from a Nintendo Event. To get Latias, they are in the wild after you beat the Elite Four. To get Mewtwo, you need to trade from LeafGreen or FireRed.
mewthree
you cant get it
use an aurora ticket
it's a spot at nintendo events to download the aurora ticket and the mystic ticket.
you needed a spiecal event in 2004 to get the aurora ticket.
The Aurora Ticket was only obtainable if you went to some Nintendo event several years ago; sorry, no longer possible. :(
Cheat to get the aurora ticket then go to birth island.
Get the aurora and mystic ticket by going to a Nintendo event.
I would imagine the dock where the S.S. Anne was.
use a GBA Gameshark to get item event
Go to Vermilion then show the guy on the dock your ticket, then go to birth island
I think you can only get it through a Japanese/New York event.