title: CDbConnection failed to open the DB connection: could not find driver on install
body: <p>Hi I m trying to setup limesurvey on xampp on linux . I want the setup to use msssql server on a windows box. I have successfully setup xampp and modified the config.php in application/config folder of lime survey to point to sql server. when i try to launch <a href="http://host.name.com:8080/limesurvey/admin" rel="nofollow">http://host.name.com:8080/limesurvey/admin</a> it shrows error as below</p>
  
  <p>CDbConnection failed to open the DB connection: could not find driver</p>
  
  <p>/opt/lampp/htdocs/limesurvey/framework/db/CDbConnection.php(382)</p>
  
  <pre><code>370 throw new CDbException('CDbConnection.connectionString cannot be empty.');
  371 try
  372 {
  373 Yii::trace('Opening DB connection','system.db.CDbConnection');
  374 $this-&gt;_pdo=$this-&gt;createPdoInstance();
  375 $this-&gt;initConnection($this-&gt;_pdo);
  376 $this-&gt;_active=true;
  377 }
  378 catch(PDOException $e)
  379 {
  380 if(YII_DEBUG)
  381 {
  382 throw new CDbException('CDbConnection failed to open the DB connection: '.
  383 $e-&gt;getMessage(),(int)$e-&gt;getCode(),$e-&gt;errorInfo);
  384 }
  385 else
  386 {
  387 Yii::log($e-&gt;getMessage(),CLogger::LEVEL_ERROR,'exception.CDbException');
  388 throw new CDbException('CDbConnection failed to open the DB connection.',(int)$e-&gt;getCode(),$e-&gt;errorInfo);
  389 }
  390 }
  391 }
  392 }
  </code></pre>