you need an action replay
You have to use Pal Park.
use your map to find out
Yes and you can also use Heartgold and Soulsilver.
There is no location in Platinum for the 152nd Pokemon (Chikorita); you have to use Pal Park.
yes you can use pokegen to get member pass or just use it to get darkrai
you can use action replay or find them as you go on yourjourney
Yes. You can use action replay to get cheat codes.
You have to go the house behind the Pokemon Center in Canalave City, and it will activate Darkrai.
yes, either migrate it from a gba game, or use the ar calculator code
Use pokeradar on route 10. See related link for details.
You can't catch Dialga in Pokemon White. After you beat the the Elite 4, you can use the PokeTransfer to receive a Dialga from Pokemon Diamond, or Platnium.
there are two ways to get a rhypherior either you use an action replay to get it from bertha in the Pokemon league or you can trade a Pokemon to get rhydon and then give it a protector and it will evolve