I have a windows 2003 enviroment with exchange server 2003. To start with I want to install windows server 2008 as an additional domain controlller. I will be running adprep.exe in my existing environment. Will running adprep make any impact on my exchange server as it modifies schema? What are the precautions to be taken before running adprep? Thnx Sujit

Hi Sujit, The adprep.exe will not affect Exchange Server after preparing Forest Schema. I have tested the situation. The Schema updates in Windows Server2008: http://technet2.microsoft.com/windowsserver2008/en/library/1d502209-cdb9-4e13-9a6c-57ad6c9d1e8b1033.mspx?mfr=true Regarding how to install an Additional Windows Server 2008 Domain Controller, please refer to the following site: http://technet2.microsoft.com/windowsserver2008/en/library/1d502209-cdb9-4e13-9a6c-57ad6c9d1e8b1033.mspx?mfr=true For more information regarding Exchange with Windows Server 2008, Please refer to the following link for further information: http://msexchangeteam.com/archive/2007/08/16/446709.aspx http://msexchangeteam.com/archive/2008/03/05/448338.aspx Mike