BlueSync is a Symbian application that keeps your mobile phone automatically updated with address book, calendar information and to-do items wirelessly using Bluetooth connectivity.

There is no need to install any PC software. The BlueSync Symbian applicatipon together with Widcomm Bluetooth software v3.0 and later is enough.
All you have to do is to start the application on your Symbian device, launch the Bluetooth and start the PIM synchronization.
You can synchronize contacts, calendar and to-do items with the Personal Information Manager (PIM) database of your PC computer.

The supported PIMs are:

Microsoft Outlook

Microsoft Outlook Express (address book)

Lotus Notes