Windows 2K3 Active Directory using AS400 DNS

Greetings all, 

I have setup an IXS with Windoze 2003 Active Directory. (Something that I 
have to do).  I have enabled Dynamic DNS on my 400 and allow it to perform 
incremental to the Active Directory secondary DNS server.

The problem that I have is when I attempt to add another server / new 
workstation to the Active Directory, I receive an error message that the 
Domain Controller is not available.  The help states that the SRV record 
is not in DNS.

>From the research that I have done, I need to setup Kerberos on the 400 
and set the KDC server on Windoze. 

Has anyone had any issues like this before?  How did you get DDNS on the 
400 to work with Microcrap, through EIM?

Thanks in advance, 
Richard A. Frye
Software Consulting Hardware, Inc.
(877) 936-9829 (Office)
(513) 936-0128 (Fax)
Rich.Frye@xxxxxxxxx
IBM Certified System Administrator - Lotus Notes and Domino 6/6.5