Parent-to-Child Active Directory Domains

I am currently running an XP OS.

I have VMWare Workstation 6.5,
and I have two separate workstations running on that. (Both Windows Server 2003) I am wanting to set up a Parent-to-Child relationship between the two workstations. IE. One of the servers is parent, one child.
I specifically need help with the TCP/IP config for both of the workstations. What ip address’s to use etc. DNS is just not my strong suit.
I have been trolling the web for some help, and trying to poll my resources. Any help is much appreciated.