This is one app that I can say I am instantly in love with. No matter how many ways you backup your contacts, sometimes it's just not that easy to get what you need to do done. Be it updating, backing up or even switching to another device, sometimes it's not as easy as it seems. That's where Contact Import/Export hopes to solve your problems. This handy app lets you both import and export (backup) your BlackBerry contacts to vCard or CSV file on your PC. Keep a current backup of contacts or edit the file right on your PC instead of on your device. You can even email the exported file right from the app. There are loads of options to set like backup frequency, where to backup, import confliction and much more. Contact Import/Export sells for $2.99 in the CrackBerry App Store and a free trial is available.
More information/download of Contact Import/Export