If a corporation does not have BES (Blackberry Enterprise Server) installed, users will have to run Blackberry desktop manager with redirect services on a dedicated desktop, in order to receive their precious emails. However, in this case, they cannot syncronize their calendars onto their RIM devices from what I found out, here are the facts:

1. If trying to sync via USB cable, the desktop manager software tells you the calendar is not available, I guess that’s because the calendar data are stored on the Exchange server.
2. Even if user have desktop manager/redirect, they still cannot get calendars, because redirect only pushes email messages.

Please, please! Let me know if I’m wrong.