Hi All, I'm upgrading my NT 4 domain to W2K right now. Is there any "white paper"you know of that I can view to make sure my Exchange 5.5 server remains working after the domain upgrade? (Hard coding registry settings, trusts, etc.) My domain will be in Native mode. And I'm migrating (cloning) accounts slowly over. When all is done, I want to decommission the old domain, and hopefully the existing Exchange 5.5 server (it's on a stand alone box), will continue to work. I know there are some hard coding that needs to happen back can't find literature on it as yet. Thanks much, Jared