Regarding Jeff's suggestion of running the Outlook tool in the logon script, I was in favor of that method myself, but there's a problem I haven't been able to solve. If a meeting organizer doesn't log in for a while, neither the attendees nor the conference rooms will have their calendars updated. The conference rooms are the biggest problem. We use direct booking and were planning to work around the problem of conflicting meetings by temporarily setting the room calendars to allow double booking. We couldn't leave them like that for long enough to allow everyone to log in and update their meetings. The only other way to handle it would be to delete the conference room calendars' meetings for the four new DST weeks, and I'm not sure how risky that might be. Comments and ideas welcome. This whole thing is just a no-win situation.