10.4.11 Active Directory Nightmare

Hi- I am able to get my Mac OS X 4.11 server to bind with a test windows domain I have created (we created a test domain so we wouldn't have to make any changes to our production AD domain). However, when I got join the server to the appropriate kerberos realm, I am unable to do so. The 'Join Kerberos Realm' window comes up but in the realm field it says '(null) Default' When I try to join it I get the following error message: 'Computer record not available The Open Directory Administrator has not used this computer's primary ethernet address when adding this computer to a computer list' I'm not really sure where to go from here, if anyone has any ideas or would need more info from me to diagnose this problem I would love some help. Thanks in advance. -A.F.