Syntax error in defining DB table names

Hi,

I am trying to publish posts which I have tied to user_Id’s through the wpnameduser plugin, using the script below. The logic behind the simple JOIN seems fine, but in trying to use the following script to publish the current user’s posts on an user specific home page, I get the error message listed at the foot of this email.

please could someone advise where I am going wrong.

Thks

**************************************************************
<div id=”content” class=”narrowcolumn”>

<?php

$querystr = “
SELECT wposts.*
FROM $wpdb->posts wposts, $wpdb->prefix . named_users wnamed_users named_users
WHERE wposts.ID = wnamed_users.post_id
AND wnamed_users.user_id = ‘$current.user’
AND wposts.post_status = ‘publish’
AND wposts.post_type = ‘post’
AND wposts.post_date < NOW()
ORDER BY wposts.post_date DESC
“;

$pageposts = $wpdb->get_results($querystr, OBJECT);

?>
<?php if ($pageposts): ?>
<?php foreach ($pageposts as $post): ?>
<?php setup_postdata($post); ?>

<div class=”post” id=”post-<?php the_ID(); ?>”>
<h2>” rel=”bookmark” title=”Permanent Link to <?php the_title(); ?>”>
<?php the_title(); ?></h2>
<small><?php the_time(‘F jS, Y’) ?> <!– by <?php the_author() ?> –></small>
<div class=”entry”>
<?php the_content(‘Read the rest of this entry ?’); ?>
</div>

<p class=”postmetadata”>Posted in <?php the_category(‘, ‘) ?> | <?php edit_post_link(‘Edit’, ”, ‘ | ‘); ?>
<?php comments_popup_link(‘No Comments ?’, ‘1 Comment ?’, ‘% Comments ?’); ?></p>
</div>
<?php endforeach; ?>

<?php else : ?>
<h2 class=”center”>Not Found</h2>
<p class=”center”>Sorry, but you are looking for something that isn’t here.</p>
<?php include (TEMPLATEPATH . “/searchform.php”); ?>
<?php endif; ?>

</div>
*******************************
WordPress database error: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘named_users WHERE wposts.ID = wnamed_users.post_id AND wnamed_users.use’ at line 2]
SELECT wposts.* FROM wp_posts wposts, wp_ . named_users wnamed_users named_users WHERE wposts.ID = wnamed_users.post_id AND wnamed_users.user_id = ‘.user’ AND wposts.post_status = ‘publish’ AND wposts.post_type = ‘post’ AND wposts.post_date < NOW() ORDER BY wposts.post_date DESC