1. Unpack this language package and goto the languague folder of the language you want to install. 2. To install the language files for the ZOO extension copy the content of "zoo/" to your Joomla installation. 3. To install the lanuage file of a specific app copy the content of "apps/APPNAME/" to "media/zoo/applications/APPNAME" of your Joomla installation. Do not copy language files of apps that are not installed! If you are running PHP 5.3.x please make sure to use an up to date version like PHP 5.3.9!