thanks so much for your tip!
! The Better Extended Live Archive plugin works properly with Atahualpa 342 (WordPress 2.8.4 | PHP version 5.2.9).
1. I've created a new archives.php
file by copying Atahualpa's index.php first
2. I've added a tiny amount of code at the top of the page
Template Name: archives
3. I've added this code in the LOOP
<?php af_ela_super_archive(); ?>
4. I've create a page based on the "Archives" page template
Please, take a look here: http://gidibao.net/index.php/archivio/
Regards as always