I've added some sample code to the <a href="http://www.scotlandsoftware.com/products/source/">source code page</a>, 
which demonstrates how to use the Address Book API in OS X 10.2 and later. Includes a live-filtering field, 
to locate entries based on forename, surname or company. 
<a href="http://www.scotlandsoftware.com/ftp/source/addressbooktest_screenshot.jpg">Screenshot</a>, 
<a href="http://www.scotlandsoftware.com/ftp/source/addressbook_test.tgz">download</a>.



That is all.