Windows Server 2003

Ipconfig/registerdns

This will update the name-to-IP-address mapping on your DNS server if the zone on that DNS server is configured to allow dynamic updates.This will update and overwrite any existing name-to-IP-address mapping and allow clients to resolve the name of the host to the newly established IP address.

To clear the client's local DNS cache, run: Ipconfig/flushdns

Ipconfig/all
This will return all of the IP configuration information for all of the network adapters installed on the local computer.