I had an old phone Nokia 6300, Does nothing much other than make calls. 
The Other day when I visited Alleppey, My Uncle Ramesh Presented me a 
Nokia Communicator 9300i. Its a great phone. I found the phone very useful 
good for business people like me. 

I wanted my Phone Numbers to be transferred from my Nokia 6300 to Nokia 9300i. 
Unfortunately I couldn't as 6300 its a cheap model doesn't have blue tooth 
or support Nokia PC Suite. I had to do it manually, This is what I did.

What You Need
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Hardware : Bluetooh Doogle , Cable or Infrared to connect to Nokia 9300i
Software :
Outlook Express or MS Outlook or What Ever
Nokia PC Suite
Yahoo! Autosync - to Sync With Yahoo Addressbook


How To
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1. Login to Yahoo Calendar. On the Right Top Click On Sync. 
Click On Install Now. Download the Application & Install it. Follow The 
Instructions Given by them. And Sync Outlook with Yahoo Calander

2. Now that you got Address book from yahoo in your computer Microsoft 
Outlook . Open Microsoft Outlook  click on contacts. You would get a 
complete list of your contacts. Go ahead edit or delete what ever you 
want to do. Sync it again with Yahoo AutoSync.     

3. Kewl You Have Synchronized Data In Yahoo & Microsoft Outlook. 
Whats left is to transfer them to your phone. Download and Install Nokia 
PC Suite. Connect your phone & Sync The data & you are done. 

Hey the coolest thing is Your Calender is also Synchronized. Now You have 
Data On a Server, On Phone & On Your Computer. Sync and Enjoy.