Very useful post snipped for brevity... Thanks, Ben. I have forwarded your post directly to our beleaguered IT people. They have looked at Evolution as a solution because we'll have some groups on Windows for a long time after the rest of us migrate. But, that PHPGroupware solution sounds more flexible and would not require us to have a Win2K server with Exchange Server. Not sure if they've considered it... but they will now. :-) By the way, your department is about the size of our entire company. If anybody else has similar successes to relate, or other software combinations, that would be helpful and persuasive. At the moment, only three of us in the whole company are using Linux on the desktop, and we're definitely marching out of step. Anecdotal evidence of usability and uptime is most appreciated. /kevin