Win2003 Server dns issue

[zer0biwan]

Hi folks,
This is a first post. I'm having dns and active directory problems. DNS is running but the domain seems to be down. I've gotten these errors so far.

"The DNS server could not signal the service "NAT". The error was 1168. There may be interoperability problems between the DNS service and this service."

and

"
The DNS server has encountered a critical error from the Active Directory. Check that the Active Directory is functioning properly. The extended error debug information (which may be empty) is "". The event data contains the error."

"
The DNS server was unable to complete directory service enumeration of zone .. This DNS server is configured to use information obtained from Active Directory for this zone and is unable to load the zone without it. Check that the Active Directory is functioning properly and repeat enumeration of the zone. The extended error debug information (which may be empty) is "". The event data contains the error."

Also the Active directory doesn't recognise new computers and several users cannot logon to the domain.

I really am at a loss as to how to fix this. Any ideas are welcomed.

Thanks.