link try

  function freeway_user_mapping()
  {
     $result = db_query("SELECT mode_id FROM {freeway_mode} ");
     $rows = mysql_num_rows($result);

        if($rows==0){
     $form['contact_information'] = array(
    '#value' => variable_get('contact_form_information', t('Welcome to Freeway user mapping .You have probably visited this page for the first time. To use the user mapping you can do either of the below 2 options.')),
);

//l(t('Link text'), 'about-us', array('attributes' => array('class' => 'about-link')));

}


   return $form;

  }