Novice questions

[n_hays at fennel.cc.uwa.oz.au]

Pardon me if this is a stupid question. I know nothing about Unix and less
about AUX.
I know that it is possible to run a Mac session as a process under AUX.
I was wondering if it is possible to run more than one Mac session
simultaneously. The idea being that, since the Mac OS lacks protected 
memory I could run those things that HAVE to stay alive under one session
and those things that I KNOW are going to bomb under another.
Also, is it possible to log in on a PC (IBM variety) and run a Mac session?
 
Thanks in advance for any help
 
Neale 
 
**************************************************************************
n_hays at fennel.cc.uwa.oz.au   University of Western Australia
 
**************************************************************************