If I place an event in my calander, do I have the option to upload it to the Unite! Server so it can be pushed to the other devices connected to the it?

With 1.0.3 to share an event from your Blackberry you must close it then select to share it. I'm not sure what happens to unshared calendar events. I suspect that they are stored to the server, but I've never checked to see if the are displayed in the server calendar view.

Prior to 1.0.3 all events were shared to all users unless marked private.