Switching from ISP DNS to Internal DNS

[Denda]

Hi all -
We currently use our ISP for DNS & DHCP resolution. We now are implementing an internal DNS server & I need to know how to do it... The router is a 2Wire & I can't figure out how to have this router forward to the new DNS server to bring people over one by one w/o affecting production.

Here's the next issue. We built a new system & are trying to join it to the domain via the new DNS server & we get an error stating that the internal DNS server is not setup as the following..
abcdomain.com
.com
.
When the DNS server was built, we did not choose the option of current ISP DNS, we chose primary DNS with AD integrated. We chose that option since we are wanting to disable the ISP DNS as soon as we get everyone authenticating to the internal DNS server.

Thanks a ton for any suggestions.

 

[Denda]

I forgot to add. The new DNS server is a 2003 Server.