I've uploaded a PHP wrapper class for the ZOGI XML-RPC API http://zogi.googlecode.com/svn/trunk/Bindings/PHP/zogi.php - along with a couple of examples - http://zogi.googlecode.com/svn/trunk/Bindings/PHP/test.php http://zogi.googlecode.com/svn/trunk/Bindings/PHP/appointment.php zOGI API documentation can be found at http://code.google.com/p/zogi/wiki/Root