Allowing CCK to handle the weight of your form elements

function wrapper_view($node, $teaser = FALSE, $page = FALSE) {
  $metadata = get_metadata($node);
 
  $node = node_prepare($node, $teaser);
 
  if ($metadata['rw_attribute_mapping']){
    foreach ($metadata['rw_attribute_mapping'] as $drupal_attr => $legacy_attr) {
      $column_name = column_name($legacy_attr);
      $node->content[$drupal_attr] = array(
        '#value' => theme('section', array('title' => t(titleize($drupal_attr)), 
          'elements' => array(t($node->$column_name)))),
        '#weight' => content_extra_field_weight($node->type, $drupal_attr),
      );
    }
  }
 
  return $node;
}
 
function wrapper_content_extra_fields($type) {
  $node = new stdClass();
  $node->type = $type;  
  $metadata = get_metadata($node);
 
  $extras = array();
 
  if (!empty($metadata['rw_attribute_mapping'])) {
    foreach ($metadata['rw_attribute_mapping'] as $drupal_attr => $legacy_attr) {
      // Don't weight the title, drupal will do this for us
      if ($drupal_attr != 'title') {
        // Otherwise, give a weight to all other rw attrs
        $extras[$drupal_attr] = array(
          'label' => t(titleize($drupal_attr)),
        );
      }
    }    
  }
 
  return $extras;
}