I'm still trying to figure out the best way to go about updating/patching any/all of our servers/computers. I wish I could find some clearer instructions (than Microsoft's) on the best way to proceed, especially with some older systems. We run an SBS2000 server plus 2 other servers (SQL, TS) which both have W2K Server. As such, we are still on Exchange 2000 as well. Our desktops/laptops are about 60% XP / 20% W2K / 20% NT. We have 4 users with Blackberry's, but I'm not sure how much they use their Calendars. Everyone that has NT basically uses the computer as a thin client, and works all the time in Terminal Server. My biggest problem comes in that Exchange 2000 DST updates are only available under Extended Support for a fee of $4000, which I can guarantee will not happen. I'm assuming there is no other way to patch it for a reasonable price (for a small business like ours), is there? The order Microsoft recommends is: 1. Apply updates to Windows operating systems on individual workstations. 2. Apply updates to Windows operation systems on Windows servers 3. Apply the Exchange Server DST Update 4. The IT administrator has one of four alternatives: 1.. Run the Exchange Calendar Update tool against all affected users, servers, or both. 2.. Push out the Outlook Time Zone Data Update tool to the clients and let the users update their own mailboxes. 3.. Run the Exchange Calendar Update tool against all affected users, servers, or both, but only modify recurring appointments. Then ask users to rebook single instance appointments that fall into the extended DST period or ask them to run the Outlook Time Zone Data Update tool. 4.. Run neither the Exchange Calendar Update tool nor the Outlook Time Zone Data Update tool. Ask users to examine their calendars and rebook as necessary. And this is the point at which I become utterly confused. First, I try to find the updates for individual workstations. There is a patch for XP, but none for previous versions. I have seen mention of a tzedit tool that will work for "all" versions of windows, but cannot find a link to it yet. Maybe I am missing something obvious. Once I find a way to patch W2K, I assume that will work for the 3 W2K servers. Next challenge is wrapping my mind around the interplay of Windows Servers, Individual Workstations, Outlook, and Exchange Server. Since I can't update Exchange 2000, what happens if I go ahead and run updates for Servers, Workstations, and Outlook? What order should I do those in? Then we have differences in Outlook between recurring (which store DST info) and single-instance (which do not) appointments. I'm starting to think the best thing to do is tell everyone to just manually adjust their time as needed (one - hour forward this Sunday, one - hour back in 3 weeks, when DST takes effect), but there has to be a better way. It seems I should patch the Operating Systems at least, but then what will happen in Exchange Server with Email and Calendars? Will all emails say they arrived an hour off. Will everyone's appointments be an hour later then they originally scheduled. Is anyone else as confused as I am? Can anyone provide a little direction? I'd be so grateful. Thanks, Toby