Multi-host orbit

[Rick Walker <walker mnstate edu>]

I've just started looking at CORBA and ORBit, in particular.  I've 
implented several client/server examples found on various sites and have 
written a few little examples of my own.  All these work very nicely on 
a single RH7.2 box, but I have one (stupid) little problem.  I am only 
able to contact my server when my client and server are on the same machine.
According to Chap. 21 (Implementing CORBA with ORBit) of the Wrox book 
Professional Linux Programming by Matthew and Stones, there should be a file
        /etc/orbitrc
which should control what kinds of connections ORBit will accept.  No 
such file.
What magic needs to be worked w/ RH7.2 to allow communication between hosts.
Thanks in advance and my apologies for bothering you w/ such a simple 
(for you) question.
RWalker
BTW ... can anyone suggest a GOOD reference for understanding corba 
network communication