http://www.msexchange.org -------------------------------------------------------Have been doing some research on this and coming up with various answers, so thought I'd post here... Have a network with Exchange 2000 on a Windows 2000 SP4 domain controller (I know not the best setup, but it is a small network and at that time client wanted only one server).... anyway, we want to migrate to Exchange 2007. Have a 64 bit server with windows 2003 R2 as a member server. Put in Windows 2003 R2 Domain controller after extending the schema. The FSMO roles will be transferred to the DC and it will be made a Global Catalog Server. It's my understanding that the Global Catalog servers in an Exchange 2007 Environment need to be at least Windows 2003 SP1. So my question is, can I remove the GC function from the windows 2000 DC w/ Exchange 2000 on it, or will I run into trouble? Or can I have 2 GCs in the domain w/ one of them being Windows 2000 and still install Exchange 2007 on the network. I also considered putting in a temp w2k server w/ exchange 2k and moving the mailboxes and decommissioning the exchange 2k on the DC before installing exchange 2007. Have always heard you should not dcpromo a machine w/ Exchange on it. Any thoughts, opinions, suggestion or references appreciated. Thanks in advance. Lee Swanson Watertown, SD ------------------------------------------------------- List Archives: //www.freelists.org/archives/exchangelist/ MSExchange Newsletter: http://www.msexchange.org/pages/newsletter.asp MSExchange Articles and Tutorials: http://www.msexchange.org/articles_tutorials/ MSExchange Blogs: http://blogs.msexchange.org/ ------------------------------------------------------- Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------- To unsubscribe visit http://www.msexchange.org/pages/exchangelist.asp Report abuse to listadmin@xxxxxxxxxxxxxx