These pages cover several versions of KAddressBook. KAddressBook is an evolving product. It is therefore important that you find the page aimed at your version of KAddressBook. KAddressBook has the same version number as the KDE Software Compilation that it is a part of. Your distribution should provide this information. You can also find the version number of your KDE SC by opening the Konqueror browser and type "sysinfo:/" in the address line.