You can use iSync to sync the contact and calendar information on your computer with the contact, calendar, and to-do information on your iSync-compatible USB mobile phone.
Before you can sync your phone and computer, you need to add your phone to iSync. You need to do this only once.
Important:You should sync your phone with only one computer. If you add your phone to iSync on more than one computer, your information may not sync correctly.
Connect your phone to your computer using a USB cable, and make sure the phone is turned on.
For more information, see the information that came with your phone.
Open iSync.
Choose Devices > Add Device.
Double-click the phone in the Add Device window to add it to iSync.
Depending on the type of phone you have, it may take up to 30 seconds for the phone to be added to iSync.