You need a friend code.
You never now when a wi fi event come to us version of Pokemon platinum. But you can look at www.Pokemon.com there it can be information about everything about Pokemon, and sometimes it stand when a wi-fi event come. Hope it helps little.
No, victini is an wi-fi event pokemon.
download it from Nintendo wi-fi
You can trade by having two or more people that are near you use IR trade which you can find on the screen on the bottom by pressing IR. You cannot trade globally without Wi-Fi though. Sorry!
yes there is wi-fi on Pokemon pearl.
Through Wi-Fi Nintendo WFC
wi-fi, action replay, or get a zorua and evolve it
yes
Yes DS's are multi-regional.
You have to have to have internet and a router. Then you have Wi-fi!
Wi-Fi. (Of course.)
You do not NEED Wi-Fi for any part of the game. You can enjoy the game best with Wi-Fi, but you do not need it.