I've got a maxed out 5.0 server with problems and need wo migrate/upgrade to 5.5 on another server. When I try to install the app and join the existing server, I get an error message that tells me to install a Microsoft Exchange Connector on the 5.0 server first. The 5.0 installation guide also mentions this connector disk. I cannot find anyone who has ever seen one. Anyone out there that has one and willing to loan/sell me a copy, I'd greatly appreciate it. Save many hours restoring mailboxes and public folders. Please Help!!!!