You can't, unless there is a gamesharks way to do it.
no way
u don't
as many as all the Pokemon boxes can hold
Yes
infinite rare candy
Here is an action replay code for infinite Eevee eggs on Pokemon Diamond. 83007CEE0086 is the code and it has been tested and verified to work.
action replay. the makers of Pokemon wouldn't want you to get infinite master balls...you have to use an action replay
action replay ds
There is no such code.
I'm Sorry but you cant get more than 18 boxes in Pearl/Diamond
yes, i do know the code if want to now go to www.pokemonactionreplay.org/pokemon+diamond/action replay.net.com.poke
you would have to set loose some Pokemon in order to make room for other Pokemon.