DNS

Can someone help me with this error, that i see in my event viewer. My server is Small Business Server (Windows 2000 Server). It reads:- Netlogon – Registration of the DnS record ‘gc._msdcs.rpmarinlaw.com. 600 IN A 192.168.1.150’ failed with the following error: DNS server unable to interpret format.
Data: 0000: 29 23 00 00

Under DNS Tab:-
The DNS Server could not find or open zone fine dns\rpmarinlaw.com.dns. in the %SystemRoot%\System32\Dns directory. Verify that the zone file is locatedin this directory and that it contains valid data.
Data: 0000: e5 03 00 00.

Please help.