I have a domain with two DNS Zones. The first one is mydomain.com with ip addressing 192.168.1.xxx and other one is mysecond.info with ip address 192.168.20.xxx. Mysecond.info was added because we had to separate an application server from the main domain. Now, I would like to upgrade the application server from windows 2000 to windows 2003, rename it and join it with mydomain.com ip addressing. How should I go about it?