In Diamond you can't catch Regirock, you have to migrate it from Pokemon Ruby, Sapphire, or Emerald.
regice regirock and registeel can only be obtained in diamond/pearl using action replay or migrating from gba
You can only get Regirock by transferring a Regirock from Pokemon Ruby, Saphire, or Emerald to the Pal Park I believe.
You cannot
You cannot get Regirock in Diamond without migrating one from Ruby, Sapphire or Emerald.
how the hell do i know!? :D
You have to trade it with Diamond and Pearl.
No.
its only in pokemon platinum
To get a Regirock, Regice or Registeel you have to migrate one from Ruby, Sapphire, Emerald, Leaf Green or Fire Red.
you bring it to snowpoint temple
you can but i don't know how yet
yes,with action replay