I recently stumbled upon a little known trick for getting your calendar to sync up with Outlook. I used to work for a web shop where all the managers had PCs and all the developers had Macs. Most of the Macs ran Thunderbird or Apple Mail and all the managers had Outlook. We tried Mac's Entourage for a while but found it could not integrate with Exchange Server. I remember being very annoyed that calendar invitations would come over as garbled emails, while the PC clients got nice little popup reminders. I often thought, couldn't Microsoft have an option to send a regular email for non-Outlook clients? Well now onto our little integration solution. I don't believe this solves the problem of integration with Exchange Server, but I think it does allow non-PC or non-Office users to accept, send and cancel calendar invitations.
In brief here are the steps below: