How can I achive this?

I use this code combination in order to show most commented 5 posts af all time.

I use latest wordpress version.

But I want to make it a little different.

How can I show most commented ( or most viewed ) posts of the recent ( last ) week ?

I have Post-Plugin Library installed.

This is what I use now:

<div class="top">

					<span class="heading1"><span>Populer Posts</span></span>

					<ul>

					<?php

						$sql = "

							SELECT *

							FROM $wpdb->posts

							WHERE 	post_date_gmt > ".(time()-strtotime('-2 weeks'))." AND post_type = 'post'

							ORDER BY comment_count DESC LIMIT 5

						";

						$top_posts = $wpdb->get_results($sql);

						foreach ($top_posts as $post)  {

							?>

							<li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a><span><a class="comments" href="<?php the_permalink(); ?>#comment"><?php echo $post->comment_count; ?> Yorum</a>Kategori: <?php the_category(', '); ?></span></li>

							<?

						}

					?>

					</ul>

				</div>

				<div class="clear"></div>

			</div>