To find the cave of Registeel, go to Lilycove City. Go west through the grass and trainers. When you reach the area of the Safari Zone, keep moving. You will reach a place with a girl. Just above her are stairs. You must go up. Go through the very tall grass and go up the stairs behind it. The cave will not be too far after the stairs. Once inside, read the Braille at the back of the room. It reads "Those who inherit our will, shine in the middle." The riddle means that you should go to the middle of the room and use Flash. The cave door will open. Be careful with Registeel. This Pokemon is more difficult than the others to capture. Try bringing a lot of Ultra Balls or prolong the battle as long as you can by freezing it or putting it to sleep. After many turns the Timer Ball will have gained a lot of strength, and it might work against the Registeel.
Added by: Pravinj Apr 26th 2012, ID#13751