Migration script for Image module

Can someone help me tune the Image to Imagefield script to work properly with the Nodereference Image Helper module.

The original migration script can be found here: http://drupal.org/node/432860

Here is the the Image Attach part that should be modified:

// Loop over the image_attach records
if (module_exists('image_attach')) {
  $table_image_attach = $table_pfx. 'image_attach'; // add prefix
  $sql = "SELECT n.nid, n.vid, ia.iid FROM {$table_image_attach} ia INNER JOIN {$table_node} n ON ia.nid=n.nid";
  $result = db_query($sql);
  $num = 0;
  while ($row = db_fetch_object($result)) {
    $num++;
    // UPDATE the imagefield to point to the attached node, not the standalone node
    $sql = "UPDATE $table_content_type SET nid = $row->nid, vid = $row->vid WHERE nid = $row->iid";
    if (!db_query($sql)) {
      echo "update $table_content_type failed for $row->iid<br />\n";
    }
    $sql = "UPDATE $table_content_field SET nid = $row->nid, vid = $row->vid WHERE nid = $row->iid";
    if (db_query($sql)) {
      // Successful update. Now unpublish the standalone node that we just made.
      $sql = "UPDATE {$table_node} SET status = 0 WHERE nid = $row->iid";
      db_query($sql);
    }
    else {
      echo "update $table_content_field failed for $row->iid<br />\n";
    }
  }
  echo "- $num image_attach relationships were migrated.<br />\n";
}