Regice=Mt.Cornet outside
Registeel=iron island end
Regirock=survile area go right and there should be a slide and the cave is hiding under the sand storm
you need the regigias event. if you don't have the regigias event you go to the cave there will be a item.
when is the regigias event? Today is 4/5/11.
you have to migrate them from saphire/ruby/ or emerald. or if you have an action replay you would need a code
Yes, that is the only way.
train them
You can only get a regice, regirock, and a registeel by migrating them from ruby or Sapphire. If you migrtate these Pokemon you can also catch regigigas.
Snowpoint temple only if you have regirock registeel and regice but to get those you need regigigas in a giveaway its an endless chain unless you go to events
well in pearl or diamond and platinum you go to snowpoint city and at the last floor you find a statue of him and it does not let you battle you have to get regirock registeel and regice when you come back with all three the master will appear
you need REGIROCK, REGICE, AND REGISTEEL.
yes but only through the special Nintendo event
get lv.100 regigigas through wi-fi event and carry it with you to iron island (registeel) mt. Coronet (regice) and the cave on route 228 (regirock)
you cannot catch any regis in platinum you have to migrate them or trade for them but if you get regirock, regice, and registeel on platinum then you will be able to catch regigagas at level1 in the snow temple
Yes, that is the only way.
You cannot. You will have to trade it.
train them
You can't... without Action Replay. I do not know a legit way to get Regice (along with Registeel and Regirock) The only Regi I know how to get legit is Regigigas, which needs Regirock Regice and Registeel. If you know a legit way to get Regirock Regice and Registeel, edit this answer. actually you can. all you have to do is send Pokemon from ruby, or Sapphire to dimond or pearl or platinum. then trade it to soul silver.
Yes, you do need the National Dex if you want to get into the Regirock, Regice and Registeel caves in Pokémon Platinum.
to catch regirock u go 6 down 9 left and 39 up
Regirock, and finally Registeel.
no you can, you most catch it in Pokemon emerald