This is Drupal 6.x and am having a nightmare of a time to modify a simple drupal form. This is a module file.

 

function modulename_menu() {
$items = array();
$items['school/registration'] = array(
'title' => 'Registration Form',
'page callback' =>'drupal_get_form',
'type' => MENU_CALLBACK

);
return $items;
}//end of the function
function modulename_school_form_alter(&$form, $form_state, $form_id)
{
// dsm($form_id);
if ($form_id == 'user_registration_form')
{
// modify the "#submit" form property by prepending another submit handler arra
$form['#submit'] = array_merge(
array('_modulename_registration_submit' => array()),
$form['#submit']
);
}
}