Sorry dude, you can't get registeel in platinum without a cheat. But you can catch Regigigas in Platinum, but you'll need all three of the Regis to get him.
If you have all the Regis(Regice, Regirock, Registeel) go to Snowpoint City and head north there is a temple and at the bottom is Regigigas. This is only accessed when you complete the Sinnoh Pokedex, I think.
You have to catch regirock, registeel, and regiice in previous Pokemon games, then import them to d/p. Then you go to snowpoint temple (you can only do this once you beat the game) and talk to the regigigas with the 3 other regis in your party.
Platinium is used as a catalyst and in electrical components, jewelry, dentistry, and electroplating.
yes platinium is much more expensive than gold
By either capturing a miscrit(1platinium), buying a miscrit(1 platinium),Daily spin(2/20 platinium) or wishing well(1 platinium).
platinium
you can only get darkria in Pokemon platinium if you get the wonder card that was a Pokemon event last year.
They are Giratina, Dialga, Palkia, Darkrai, Arceus, Cresselia, Uxie, Azelf, Mesprit, Heatran, Moltres, Articuno, Zapdos, Shaymin, Regigigas, Regice, Regirock, Registeel and Manaphy (Recieve egg from Pokemon Ranger). Some of them require special events.
Pt
no
34.95
Registeel