Default login page little change
The best way to accomplish this is using hook_form_alter() with custom module. For example,

function your_module_form_alter(&amp;$form, $form_state, $form_id) {
  if ($form_id == 'user_register') {
    drupal_set_title(t('Create new account'));
  }
  elseif ($form_id == 'user_pass') {
    drupal_set_title(t('Request new password'));
  }
  elseif ($form_id == 'user_login') {
  drupal_set_title(t('Log in'));
  }
}