Our Windows NT4-based local area network connects to the Internet via a wireless/Ethernet router. The router performs network DHCP functions, including assignment of DNS IP addresses for the Internet Service Provider. We would like to upgrade to Windows 2000 and Active Directory, but we don't know how to reconcile the requirements for Windows 2000 DNS (SRV records) with the external DNS. We do not have a registered domain name. If we manually configure the local area network IP settings with the Win2k DNS server as primary and the ISP's DNS as secondary, will the client machines still resolve Internet IP addresses, or are there other configuration considerations to be taken into account?