Yii-User I.

return array(
#...
        // autoloading model and component classes
        'import'=>array(
                'application.models.*',
                'application.components.*',
                'application.modules.user.models.*',
                'application.modules.user.components.*',
        ),
#...
        'modules'=>array(
                'user',
        ),
#...
        // application components
        'components'=>array(
#...
                'user'=>array(
                        // enable cookie-based authentication
                        'allowAutoLogin'=>true,
                        'loginUrl' => array('/user/login'),
                ),
#...
        ),
#...
);