If you want to synchronize folders that are available when offline with the online mailbox, you need to use an OST, not a PST, file. In Exchange, PSTs are for archiving, not active storage. Using an OST means making the online Exchange mailbox the primary delivery location. To create the OST, in OL 2003 you simply enable cached mode - a checkbox on the Exchange account setup form. This creates the OST and synchronizes it with the online folders. You work primarily from the OST file whether connected or not. To have all the mail in the same place, users will need to copy from their PST storage back to the Exchange mailbox storage. You'll need to insure you have sufficient Exchange storage to accommodate them. Side-benefit is that nobody's mail gets lost when the PST file gets damaged or the notebook PC is lost/stolen/broken. Carl -----Original Message----- From: A. Michael Salim [mailto:msalim@xxxxxxxxxxxx] Sent: Tuesday, June 21, 2005 4:44 PM To: [ExchangeList] Subject: [exchangelist] synchronizing calendars Exchange 2003 /Outlook 2003 Hi all, This may be a simple question but I have not been able to find a way to do this. Our Outlook 2003 users are connected to our Exchange 2003 server via RPC/HTTP or VPN conenctions over the Internet (not on local LAN). In Outlook, they have a calendar labeled "Calendar" which is apparently in their personal PST folder, and then another calendar labeled "Calendar in Mailbox - ..." which I assume is on their online Exchange 2003 mailbox. Is there a way to keep these two sync'd so that changes made in the personal calendar are reflected in the online calendar (and perhaps vice versa too)? best regards Mike