Address Book is an application that comes bundled with your Mac computer. In order to reinstall the utility, insert the Mac OS X installation disc in your computer's optical drive, double-click the Optional Installs folder, and then double-click the Optional Installs package. Follow the on-screen instructions, click Continue, expand the Applications list, check the box next to Address Book, press again Continue and then Install. Check the official web page for further details. If you have issues, use the contact information from the official web page to get in touch with the support team.
