Currently Being ModeratedAug 23, 2013 8:02 AM (in response to marydepaul)
Great question. The core answer to this question is that you'll want to setup contact syncing with your Mac. The preferred method is to sync your contacts via iCloud, however this would require an OS X update, as I see you are running Mac OS X 10.6.8.
Alternatively, you can setup syncing with iTunes:
Please back up your device before setting up syncing to avoid any accidental data loss.