One subtle documentation issue for newbies trying to set up a Linux network is that from a pc point of view, we are trying to "start" what we consider to be special services, such as mail service on a network. I have been mulling over sendmail documentation and other references having to do with e-mail, and to start, I just want the students to e-mail me and each other. We aren't even connected to the internet yet. I was puzzled because nowhere did I read about "starting" the service. I finally just opened up elm today at lunch and sent a message from root to my user account. Duh! It already is "on." Now I can just use NFS to have all the accounts share the same spool, or so I think.