Hello Customer has one server with - Windows 2003 server - Global Catalogue Domain Controller - and that server also has Exchange 2003. This is NOT a SBS server. Does any body know of any difficulties installing that latest Exchange Service Pack on the server that is also the global catalogue server for the network? Just Asking Leo Hasse leo@xxxxxxxx Office: 503.924.4491 Fax: 815.642.4913 Business Solutions Group Corp. www.BSGC.com <http://www.bsgc.com/> Analysis, Computer Consulting, Programming, Networking, and Maintenance This E-mail may contain confidential and privileged material for the sole use of the intended recipient. Any review, use or distribution by others is prohibited. If you are not the intended recipient, please contact the sender and destroy or delete all copies.