Public IP

IP address clarification -- different IP addresses for same computer - ipconfig vs. browser

This question is just for my own education (as opposed to trying to accomplish a particular task).  Can someone explain the difference between the IP address which is displayed by sites, such as: http://www.displayip.net/ - as your computer's IP address  and the information that ipconfig...

DNS windows server 2003

We have configured a DNS server with a public IP on a Windows 2003 server. It is working fine and we are able to access internet through this server. We want to know whether this DNS is resolving the IPs or it is forwarding to the other DNS (defined in Hint).