Watch the Video Demo :   
http://www.youtube.com/watch?v=L3K0kaod9TU

Free Download iPhone Contacts Backup (Mac+PC):
http://www.kinglue.com/mac/iphone-contacts-sms-backup/

iPhone Contacts Backup is a useful tool to export contacts from iPhone as CSV and vCard files for importing to other applications like: Yahoo Mail, Gmail, etc.

This video tutorial will show you how to import iPhone Contacts to Yahoo Address Book in details. Watch it to get the easiest solution.

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MobileGo for iOS (Windows) - http://www.iphone-manager.com/
As an Apple devices manager, it enables you to manage iOS devices at ease. It can help you to transfer songs, videos, playlists, iTunes U, Podcasts to iTunes/PC and manage photos.