gistfile1.txt

'clientScript'=>array(
            'class' => 'CClientScript',
            'coreScriptPosition' => CClientScript::POS_HEAD,
            'corePackages' => array(
                'jquery'=>array(
                    'baseUrl'=>null,//unset the defaults
                    'js'=>null,
                    'depends'=>array('jquery-1.6.4'),//tell the component that it depends your package
                ),
            ),
            'packages'=>array(//register your packages
                'jquery-1.7.1'=>array(
                    'baseUrl'=>'/js/',
                    'js'=>array('jquery-1.7.1.min.js'),
                ),
            ),
        ),