Welp, I've started configuring my system, after wiping the drive and starting over. After following the procedure documented on a website about add a MacOSX system to a NIS domain, I rebooted to see if it would take.
First thing I noticed, was that the /etc/hostconfig file was immediately altered. The HOSTNAME field, in which I entered the systems's hostname, was changed to be the same as the NISDOMAIN entry in the same file.. (?!?!?)..
Thats is just not right. I have to use "hostname -s <host.company.com>" to reset it back. Just for fun, I check the /etc/hostconfig again, to see if it is still set to the NISDOMAIN. Nope, it is now set the way it was supposed to be. It appears as though the hostname command can now alter the /etc/hostconfig file..