404 error occured when hiding index.php

I am studying the demo "hangman" and try to hide the index.php by setting the urlmanager as follows in the main config file:

‘urlManager’=>array(

'urlFormat'=>'path',


[b]'showScriptName'=>false,[/b]


'rules'=>array(


	'game/guess/<g:\w>'=>'game/guess',


),

),

which is the only change i made to this demo. And 404 error occured in the guess page:

"Not Found

The requested URL /yii_1_10/demos/hangman/game/guess/L was not found on this server."

The httpd.conf contains the following lines:

<IfModule dir_module>

DirectoryIndex index.html index.php

</IfModule>

My environment is: winxp/Apache2.2.21/php5.2.17/yii1.1.10

did you check / add the .htaccess file?

Check again the documentation for this - http://www.yiiframework.com/doc/guide/1.1/en/topics.url#hiding-x-23x