Yii-auth install error

Hi i try install yii auth ext http://www.yiiframework.com/extension/auth/ , but have error "include(User.php): failed to open stream: No such file or directory"

my config


// uncomment the following to define a path alias

// Yii::setPathOfAlias('local','path/to/local-folder');

Yii::setPathOfAlias('bootstrap', dirname(__FILE__).'/../extensions/bootstrap');

// This is the main Web application configuration. Any writable

// CWebApplication properties can be configured here.

return array(


	'name'=>'My Web Application',

	'aliases' => array(

    'bootstrap' => 'ext.bootstrap',



	// preloading 'log' component


	// autoloading model and component classes








		 'auth' => array(

                        'strictMode' => true, // when enabled authorization items cannot be assigned children of the same type.

                        'userClass' => 'User', // the name of the user model class.

                        'userIdColumn' => 'id', // the name of the user id column.

                        'userNameColumn' => 'name', // the name of the user name column.

                        'defaultLayout' => 'application.views.layouts.main', // the layout used by the module.

                        'viewDir' => null, // the path to view files to use with this module.


		// uncomment the following to enable the Gii tool





			// If removed, Gii defaults to localhost only. Edit carefully to taste.





	// application components






	'authManager' => array(

	'behaviors' => array(

            'auth' => array(

                'class' => 'auth.components.AuthBehavior',

				 'admins' => array('admin'),







			// enable cookie-based authentication


			'class' => 'auth.components.AuthWebUser',







		// uncomment the following to enable URLs in path-format












			'connectionString' => 'sqlite:'.dirname(__FILE__).'/../data/testdrive.db',


		// uncomment the following to use a MySQL database



			'connectionString' => 'mysql:host=localhost;dbname=yiitest',

			'emulatePrepare' => true,

			'username' => 'root',

			'password' => '',

			'charset' => 'utf8',




			// use 'site/error' action to display errors








					'levels'=>'error, warning',


				// uncomment the following to show log messages on web pages










	// application-level parameters that can be accessed

	// using Yii::app()->params['paramName']


		// this is used in contact page





what i do wrong ?

Is the User model present in the application models folder?

no , how can i get this models ?

Surely you must have a table in which you register your users. Why else would you install Yii-auth?

When that user table has a model by another name change the settings of the module auth.