I've been using a Java-based tool named DAVmail (davmail.sourceforge.net) to access my Exchange calendar from Thunderbird with the Lightning plug-in. It can basically proxy Exchange calendars (and e-mail for that matter) to protocols that Thunderbird and Lightning can understand. I've used it with T'bird 2 and 3 with good results. I believe there is a way to set up a single DAVmail proxy server for multiple users, but your mileage may vary. Just a thought! -- Jay Leafey - Memphis, TN jay.leafey at mindless.com