I make it my duty to say...according to their web site http://www.ea.com/nucleus/games/mm_blkwht00/home.jsp , there is not a version of Black and White for Linux as of yet. I do agree, a version for LINUX would be a really good thing, but I guess since LINUX is open source that they, along with a lot of other game developers fear that someone will take their game or application and modify it.
Welcome to Hell , where we have served more than all of the fast food chains put together! And the number grows everyday! Stay tuned!