I'm assuming that you only want your DNS server to resolve requests for your intranet. Have you configured DNS on your server? If not, you will have to set the Preferred DNS server with your server's IP address and leave the Alternate blank. In DNS, you right click on the server name, choose properties, choose the Forwarders tab and here is where you enable IP forwarders. This is where you put your ISP's DNS server IP's. For all DNS requests on your intranet that your DNS server cannot answer, will be forwarded to your ISP. In the forward lookup zone, you should not have a "." (dot) folder. If you do, remove it. You should have a FLZ that is your domain name. Remember that if the domain name already exists on the internet, it is recommended that you add a prefix which will make is look like a child domain, as we named domains in the past. Example, if your internic registered domain name is mycompany.com, they you name your intranet domain something like state.mycompany.com. This will reduce the confusion when a request is on your intranet--it knows when it is local and when it has to leave the domain.
Back to the FLZ--you will have the SOA as your DNS server and also have an A record. If you want to be able to resolve IP address to names as well, you will need a reverse lookup zone with a pointer record of the server as well.
The best source for your documentation is the online help. You will find that the Windows 2000 help is the best help that Microsoft has ever developed. There is information in there that I have not seen in any book--to include Microsoft's own W2K Resource Kit. Best of luck to you.
