It is best to read up on the update on Microsoft's Web Site. There are very good, concise, instructions on doing the update. You need to allow some time between steps for changes to the schema to propagate to all domain controllers. I did the upgrade and the upgrade tools check for all that and force you to do those updates to the schema. Bill doesn't let you mess it up without lots of warnings. There is also another schema update with the latest version of Windows 2003 (2003 R2) that you need to run if you are installing that version of Server. There is also probably a update to the schema when you go from exchange 2000 to 2003 but that might be incorporated in the Windows 2003 R2. If not, the tools will check and make sure you do it. We have a pretty small domain so it wasn't much of a problem once I decided it was time to do the upgrade. The tools worked well for me. Douglas Jensen Douglas.Jensen@xxxxxxxxxxxxx <mailto:Douglas.Jensen@xxxxxxxxxxxxx> Voice (952) 402-9821 Fax (952) 402-9815 Network Administrator Scott Carver Dakota CAP Agency, Inc. 712 Canterbury Road Shakopee, MN 55379 www.capagency.org <file:///C:/Documents%20and%20Settings/djensen.SCDCAP/Application%20Data /Microsoft/Signatures/www.capagency.org> ________________________________ From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Alex Sent: Tuesday, January 30, 2007 9:32 AM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] upgrade does anybody have anu info for upgradeing windows 2000 domain to windows 2003 with exchange 2000 installed i know that there is a interorg fix that i have to run first but it seems that i also need to be enable shema update through the register is this true or is there another way thanks