index page isn’t index.php but news.php

Hello here 🙂
I have news.php with this code:
<?php /* Don't remove this line, it calls the WP function files ! */
$blog=1;
$cat= 3;
require_once("../.././wordpress2/wp-blog-header.php");
?>
<!-- // loop start -->
<?php foreach ($posts as $post) { start_wp(); ?>

<div class="news">
<h3 id="post-<?php the_ID(); ?>"><?php the_title(); ?></h3>

<?php the_content(); ?>
<?php the_time("d/m/y"); ?>
</div>

<!-- // this is just the end of the motor - don't touch that line either :) -->
<?php } ?>

Now, I’ve just added the code for the archives

<?php wp_get_archives('type=monthly'); ?>

but there’s a problem: the PHP code for the archive generates links as:
http://www.domain.it/news.php/index.php?m=200406

and obviously it doesn’ work correctly.

(In the general options I’ve “http://www.dominio.it/news.php&#8221; as the blog URI.)

What should I do?
thanx.