Barbara> How do I set up the general loopback network address
Barbara> 127.0.0.0?
First off, I think you're wanting 127.0.0.1 and not 127.0.0.0... the
former is the standard loopback address, if you want to conform to
standards.
Second, a good way to set up the loopback address is to add the
following line to your /etc/hosts file (if it's not there already):
127.0.0.1 <hostname>
where <hostname> is whatever name you gave your computer (you can get it
by typing "hostname" (minus quotes). I've got this line inside the
"debconf" area in my hosts file... if you have networking configured
right it should probably be working already. Try "ping 127.0.0.1" to check.
Hope that helps...
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DvB