Someone

<?php
/*
Template Name: Events
*/
?>

<?php get_header(); ?>

<div id="content" class="narrowcolumn">
<?php
query_posts('page_id='.$_GET['page_id']);
$more = 0;
?>

<?php if (have_posts()) : ?>
<?php while (have_posts()) : the_post(); ?>
<div class="post">
<h2 id="post-<?php the_ID(); ?>">" rel="bookmark" title="Permanent link to <?php the_title();?>"><?php the_title(); ?></h2>
<div class="entry">
<?php the_content('Read more »'); ?>
</div>
<p class="postmetadata">
<?php edit_post_link('Edit','',' | '); ?>
<?php
//comments_popup_link(' Leave A Comment »', '1 Comment »', '% Comments »');
?>
</p>
<?php trackback_rdf(); ?>
</div>
<?php endwhile; ?>
<?php endif; ?>

<?php
$query= 'cat=11'; // concatenate the query
query_posts($query); // run the query
$more = 0;
?>
<?php if (have_posts()) : ?>
<?php while (have_posts()) : the_post(); ?>
<?php require('post.php'); ?>
<?php endwhile; ?>

<div class="navigation">
<div class="alignleft"><?php posts_nav_link('','','« Previous Entries') ?></div>
<div class="alignright"><?php posts_nav_link('','Next Entries »','') ?></div>
</div>

<?php else : ?>

<h2 class="center">Not Found</h2>
<p class="center"><?php _e("Sorry, but you are looking for something that isn't here."); ?></p>
<?php include (TEMPLATEPATH . "/searchform.php"); ?>

<?php endif; ?>

</div>

<div id="sidebar" style="vertical-align:top;">

<div id="pages_nav">
<div style="margin-left:25px;">
<?php if(function_exists("wp_pages_nav")) {
wp_pages_nav("current=69&sort_column=menu_order&show_parents=0&show_children=1&depth=2");
} ?>
</div>

<div id="divArchives">
<h3>Archives</h3>
<?php wp_get_archives('type=monthly&limit=12'); ?>
<?php //get_calendar(); ?>
</div>

</div>

</div>

<?php get_footer(); ?>

changes....

query_posts($query_string);
$more = 0;

and

$query= 'page_id='.$_GET['page_id'];
if($_GET['paged'] != ''){
$query=$query . '&paged=' . $_GET['paged'];
}
query_posts($query);
$more = 0;