Adding an additional link button to a form (using form->create)

I have recently been assigned a CSS & design project that's in a CakePHP environment and would like to know if I can add an additional button to the form, for a "sign up" link.

The form is currently:

 echo $form->create('User', array('action' => 'login'));
    echo $form->inputs(array(
      'legend' => 'Please log in:',
      'username', 'password'));
 echo $form->end('Login');

I would like to inject a button that goes to an action of 'register', preferably after the "Login" button, on the same line, like this:

username: [ ]

password: [ ]

[Log In] [Register]

I have everything but the 'register' button. Is this possible using the 'automagic' form creation? Thank you.