===How can I synchronize data with my mobile phone?===
This is currently only possible with third party programs. There is a free windows tool [http://www.Muffin.tk/?Delphi:GammUI GammUI] based on the [http://www.gammu.net org Gammu] GSM library that currently supports one way synchronisation from mobile to Sunbirdfor windows. The original Linux counterpart is called [http://wammu.eu/ Wammu] and supports two way iCalendar exchange with a mobile phone.
There is a free tool available, which allows two way synchronisation between Sunbird and Windows Mobile platforms like PocketPCs and SmartPhones. It also synchronizes Thunderbirs'd addressbook. It's written in Java and works on Windows, Linux and OS X. See for details: http://www.finchsync.com