sometimes you can find them at http://www.pokemon.com/
You cannot find it as it is a event Pokemon , the date of the wifi event is uncertain
you can not find victini , you obtain it from i wifi event which ended in April
act fast and get him on wifi event
either by cheating or a wifi event (but wifi event expired)
Wifi
You get Rotom through a WiFi event, though i don't know when. Proof that it is a WiFi event is that there is a Japanese picture of the WiFi card with Rotom in the corner of the card.
Genesect is not out yet. Pokemon.com says that it will come out later as a Wifi event pokemon.
You get it by a wifi event.
It is a WiFi event.
use a site called serebi.net or bulpedia.net both websites are Pokemon info sites serebii has daily Pokemon black and white updates, episodes etc. type in wifi event on search and it has a list of all wifi event Pokemon dates for japan, America and Europe
you get it from an event over wifi (this event has ended)
There is currently a Deoxys WiFi event on going for BW2 until the 31st May.