you don't, you only can trade from platinum (and others such as Soulsilver and Heartgold etc.) to black white)
you cant catch it in platnium but you can trade it
trade from platnium
Trade or import
Hack or trade.
No, you'll have to trade it from Platnium. Which in Platnium you find it in the Rock Peak Ruins.
no you must poketransfer platinum Pokemon from the game to black/white. just like pal park: beat elite four to unlock
You can either trade with a friend who has it or trade from you diamond, pearl or platnium
transfer and trade systems
Your best bet is to trade.
trade from pearl, diamond, or platnium
U have 2 trade him
you have to trade him from Pokemon platnium