$username = $this->getRequestParameter('username');
      $c = new Criteria();
      $c->add(AccountsPeer::USERNAME, $username);
      $this->result = AccountsPeer::doSelect($c);
      if($this->result) {
          $this->getUser()->setAttribute('username',$username);
          $this->sitekey = $result->getSitekey();
          return sfView::SUCCESS;
      } else {
          return sfView::ERROR;
      }