Wizard Model howto?

Hi,

I follow documentation, but I must add CakePlugin::load('Wizard'); on boostrap php, and I can't understand now how to make the view.
If I made a Controller for the wizard and this don't hava a model I get an error:

"Error: Table signups for model Signup was not found in datasource default."

<?php echo $this->Form->create('Signup', array('id' => 'SignupForm', 'url' => $this->here)); ?>

<h2>Step 1:</h2>
<?php 

    echo $this->Form->input('User.username', array('label'=>'Email:'));
?>
<div class="submit">
    <?php echo $this->Form->submit('Continue', array('div' => false)); ?>
    <?php echo $this->Form->submit('Cancel', array('name' => 'Cancel', 'div' => false)); ?>
</div>

<?php echo $this->Form->end(); ?>

How can I made the Model class of the wizard?
There ia a complete sample to be downloaded?

Thankyou