Hi all, I'm planning to upgrade my domain from 2000 to 2003 and in doing so, create a new domain controller and decommission the old one as I'm afraid the hardware might fail anytime.. What I'm planning to do is the build a new computer, install windows 2000 server. Then dcpromo it to create a second dc in the domain. Then, transfer the fsmo and make it global catalog server. Now, by doing so, how does the exchange server recognize that I now have a new DC. Is it as easy as change the DNS on the exchange server or do I have to run some tool? Thanks chris