OS for computer illiterate?

[wfd00828 at uxa.cso.uiuc.edu]

I have a question that may or may not be stupid or relevent; at the moment,
its just something thats rolling around in the back of my mind.

How "crash-proof" is, say, SCO Xenix, or Unix, or whatever?  How about 
someone else's?  What I'm (potentially) looking for is an OS that will allow
a '386 machine to support, say, five users (terminals?), none of whom know
more about computers than being a casual MS-DOS (or maybe just TRS-DOS)
user, including someone acting as site manager.  Any suggestions? 

Apologies if this group is inappropriate.

I don't read this grope, err, group regularly, but if you're interested in
responses, drop me a line; I'll send you a copy.

Many Thanks.

Please email to:
w-dexter at uiuc.edu

Walt Dexter
University of Illinois