Currently Being ModeratedJan 18, 2013 4:36 AM (in response to Arshad Bhatti)
Selected under the Info tab for the iPhone sync preferences with iTunes.
Select Sync Contacts.
This is not an import, this is a sync. If the iPhone includes any contacts and the same for the Outlook address book, you will be provided a merge prompt with the first sync for this data which you want to select. This will merge the contacts between the two with contacts kept synched between both afterwards.