AD replication with DNS config problem

My GPO's and even the domain GPO do not work so I did a resulant of policy
(logging) on a pc & found this msg

Group Policy Infrastructure failed due to the error listed below.
The specified domain either does not exist or could not be contacted.

Note: Due to the GP Core failure, none of the other Group Policy components
processed their policy. Consequently, status information for the other
components

So I though my AD was screwed & reinstalled w2k3 ,but when I reinstalled
(clean install) I got this msg when I set my server as a Domain Contoler


Diagnostic Failed
The registration diagnostic has been run 1 time.

Warning: Domain Controller functions like joining a domain, logging onto a
domain, and Active Directory replication will not be available until the DNS
infrastructure for Active Directory is correctly configured.

The wizard encountered an error while trying to determine if the DNS server
with which this domain controller will register supports dynamic updates.

For more information, including steps to correct this problem, see Help.

Details
The primary DNS server tested was: localhost.xyz.com (127.0.0.1)

The zone was: xyz.com

The test for dynamic DNS update support returned:
"This operation returned because the timeout period expired."
(error code 0x000005B4 ERROR_TIMEOUT)

So I said yes to in stall DNS on my server all seemed to install ok. but
still the problem with my AD & GPO's all the reset seem ok.user logging file
tansfer ok.

Went in DNS & did a launch NSLOOKUP & got this

*** Can't find server name for address 192.168.1.95: Non-existent domain
Default Server: UnKnown
Address: 192.168.1.95

I use a wireless hub who is also configed as a DHCP but Iam using the ports
in the hub & assigned static IP address my internet works fine on all pc's
om my servwer my prefered dns server is at 127.0.0.1.

I need help to fix this problem I dont know How. been working on It for 2
days.

Thank-you for any insight you can bring

.

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