I am not really sure on the correct terminology, but hopefully this makes sense. I teach high school and I have set up an Apple Xserve as a Web server. It has been a trial and error, learn by fire situation. Anyhow, this summer I spent a lot of time getting the server set up to run WordpressMU properly. Then I came across Buddypress and thought that would be perfect for my classes (I teach graphic design, a bit of Web, a bit of Flash, and starting Final Cut). I am thinking high school students would really like the social aspects of BP.
The problem is that I host other sites (school newspaper, other teachers, etc.) and I want my class site separate for purposes of BP. Can I have two separate domains/URLs for this one server both running WPMU sites? That way I can have BuddyPress for my class without stuff from the other sites showing up. So, one server, but two WPMU sites like: http://maclab.xxx.com and http://chargertech.xxx.com?