Yes and no.Black ace said:Didn't it have to do with the global link?thedicemaster said:entralink is available.
but to make use of it(and change the people in white forest/black city) you need to find someone with the other version in wireless range.
Yes because in Dream world when you get pokemon from there and they are sent to your DS, you use that place to catch them.
It is also used for local wireless to do missions to get stuff for Black City and White Forrest