to be honest, you might be able to pair it with another device, but most blackberries dont have the capability to send/recieve files. the bluetooth function on most blackberry's is just for headsets or speakerphones. i had this problem when i switched to a blackberry curve (8330) and had to put all my contacts in by hand. if you are looking to switch contacts from another blackberry or PDA style phone, you would be best at downloading the desktop device manager from http://na.blackberry.com/eng/services/desktop/ . its also a good place once you have all your contacts in your phone to back it up periodically.
hope this helps