> To use the relocater you must have 2 Nintendo DS systems,the Pokemon
> game you have your legendary dogs on and your Pokemon white
> game.1.insert your Pokemon white game into one nintendo ds,then put
> your Pokemon game that has your legendary dogs and celebi on it into
> the other nintendo ds system(make sure that you have the dogs and
> celebi in the box or else it will not work).2.Turn on the ds that has
> your Pokemon white inserted in it go to the title screen and select
> the relocater option once it asks you if you want to continue select
> yes,then set that ds aside for now.3.Turn on your second ds(make sure
> the game is inserted inside of the ds)then select DS Download Play,
> wait a couple seconds,when it shows "Pokemon White version relocater
> program" select that,download the software,wait a little;then once
> your ds with Pokemon white in it says "activating relocater please
> standby" it will search your seccong ds game for event Pokemon in this
> case your dogs and celebi,then it will tell you how many Pokemon it
> found, select yes.4.then it will send your event Pokemon to your PC
> into Pokemon white and best of luck continuing on your search for I
> assume Zorua and Zoroark.
Sorry for my long answer
Good Luck!
Source: Me and my broken DS :p
P.S: These events have been long gone...so yeah