Hmm. So like the helloecoliving.com site, you can set up wpmu and load buddypress on a subblog like community? I thought that bp had to reside on the root install. I apologize if I sound like an idiot for not realizing that, but is that the case? This might be the answer to my problem where I can have a standard wordpress site/theme for the root, but a bp enabled theme for the community blog.