Anyway, David, I have made a diagram that "should" look somewhat like what you have, I'm still confused about how you have this all hooked up to only 2 5 port switches, but the diagram has all machines as you suggested they were. The first page you see, is the address assignment for each of the PCs, there is a link at the bottom for the diagram and what PC should get what IP.
Address Assignements
Greazy Mcgeezy