How to get Manaphy/Phione in Pokémon Diamond/Pearl

I'm using an Action Replay DS, but if you don't have one, you can get them through either trading or getting the Manaphy egg in Pokémon Ranger *~Here's the AR Code~* Manaphy egg Event - Press L+R when walking into PokéMart: 94000130 FCFF0000 B21C4D28 00000000 B0000004 00000000 0000AA3C EDB88320 2000AA68 00000007 D2000000 00000000