I currently have a dedicated dhcp server (FreeBSD) which feed all my other machines my cable internet.
The setup is standard 1 eth port to the cable modem and another to the switch.
LMCE wants to be the server and I want to let it. My problem is that my cable point on the other side of the house to my aieral points.
Moving the points is not a simple or cheap task in this house. Running a network cable from the modem to the core's location is also not an option due to long length of the cable and poor output from the modem.
I am sure there is a simple solution out there I am just not doing well getting it.
from what I can make out from your post, you have a cable modem connected to a dhcp server(FreeBSD) then connected to a switch that goes to all your other machines.
The simple easy fix, is to put the LinuxMCE Core where your dhcp server currently is...then you can (possibly) reuse your old dhcp server as a Media Director..
the back end (core) doesn't need to be too powerfull, it operates like a big router..
you could possibly re-task your current DHCP server to become a linuxMCE core, and then use your current core as a MD..
Now, you still have the possibility of running a cable.. actually, you already have the cables run.
just get some quick connects, and extend (join 2 cables together) from the cable modem to where you want to put the core. Don't forget, the switch should be on the private side of the core, so I still think my first suggestion is better.