vocabindex_page.tpl.php for each vocabulary?

Currently it's not possible to have multiple vocabindex_page.tpl.php files, but you can add content per vocabulary by using an if statement that checks if $parent is a vocabulary object and uses the VID to add the right data to the page.

Does this answer your question?

Voilà:

// $Id: vocabindex_page.tpl.php,v 1.1.2.6 2008/11/02 00:27:02 xano Exp $

/**
 * @file
 * Renders an index page.
 *
 * Available variables:
 * $parent      Either the VI object or a $term object.
 * $list        The list of terms.
 * $pager_alpha A pager to filter by first letter. Used for alphabetical lists.
 * $pager       A regular pager or NULL if unnecessary.
 */
if (!isset($parent->tid)) {
  switch ($parent->vid) {
    case 3:
      echo t('Dude, have you seen my car?');
      break;
    case 867:
      echo t('Geez, you got a lot of terms!');
      break;
    case 45:
      echo t("That's when the war ended");
      break;
  }
}
if ($parent->description) {
  echo '<p class="vocabindex-desc">' . $parent->description . '</p>';
}
echo $pager_alpha . $list . $pager_alpha . $pager;

The if statement checks if the parent is not a term (you can't for VID, since terms and vocabularies have that property). Then it checks the if the VID matches certain values (3, 867 and 45) and in this case echoes a string. You could also replace the echo statement with a function call or any other PHP code.

Good luck!

Good to hear that :)