function register()
{
  $this->set('username_error', 'Username must be between 6 and 40 characters.');
  if (!empty($this->data))
  {
    if ($this->User->validates($this->data))
    {
      if ($this->User->findByUsername($this->data['User']['username']))
      {
    	 $this->User->invalidate('username');
    	 $this->set('username_error', 'User already exists.');
      } else {
        $this->data['User']['password'] = md5($this->data['User']['password']);
        if ($this->User->save($this->data))
        {
          $aro = new Aro();
          $aro->create($this->User->id, 'User', $this->data['User']['username']);
          $this->Session->write('user', $this->data['User']['username']);
          $this->redirect('/users/cp');
        } else {
          $this->flash('There was a problem saving this information', '/users/register');
        }
      }
    } else {
      $this->validateErrors($this->User);
    }
  }
}