I only know where regirock and regice is sorry....
You know that forest where roserad is? Go there until you see a cave and bring a garchomp(hippodown temple) then a rock with regirocks colors are is there use garchomps crush and the rocks will be smashed. Regice: Remember lucario? in the cave where the save machine is, regice stature is I think burn is the move for it, but yeah go to where the room is just before lucario and destroy that rock, Hope I helped... Sorry I cant find registeel...... Source:Experience in catching regirock, Heres the real answers.
registeel: http://bulbapedia.bulbagarden.net/wiki/Registeel_(Pokémon) regirock: http://bulbapedia.bulbagarden.net/wiki/Regirock_(Pokémon) regice: http://bulbapedia.bulbagarden.net/wiki/Regice_(Pokémon) hope it helped!
