Custom Sidebar - How to Add new Widget / Plugin (recent comments)

Hello, my site is http://tiny.cc/a4guz 

on the sidebar, I would like to get rid of Popular Articles and replace it with a new plugin i just installed called "Recent Comments with Avatars". Since I am unfamiliar with PHP, I am not sure what code to put in so I can do this...

Any help?

Thanks :)

<div class="mainright">







		  	<div id="sidebar">



			



<!-- Search Section -->			



			<div id="searchsection">



				<?php include (TEMPLATEPATH . '/searchform.php'); ?>



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



			  </div>



			  



			<?php 	/* Widgetized sidebar, if you have the plugin installed. */



					if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar() ) : ?>



<!-- End of Search Section -->		











<!-- Poll  -->	



<?php if (function_exists('vote_poll') && !in_pollarchive()): ?>				



	<div class="sidebarWrap" id="poll">



			<h2>Polls</h2>



            <div class="sbContent">



            <?php get_poll();?>



            </div>



	</div>



    <?php endif; ?> 



<!-- End of Poll  -->











<!-- Your Ad Here -->







	<div class="sidebarWrap" id="sponsor2">



			<h2>Support our Sponsors</h2>



			<div class="sbContent">

<!-- Beginning of Project Wonderful ad code: -->

<!-- Ad box ID: 51333 -->

<script type="text/javascript">

<!--

var pw_d=document;

pw_d.projectwonderful_adbox_id = "51333";

pw_d.projectwonderful_adbox_type = "4";

pw_d.projectwonderful_foreground_color = "";

pw_d.projectwonderful_background_color = "";

//-->

</script>

<script type="text/javascript" src="http://www.projectwonderful.com/ad_display.js"></script>

<!-- End of Project Wonderful ad code. -->

</p>

			



			</div>



	</div>



<!-- End of yOUR aD HERE   -->


<!-- Featured Stunna -->					



	<div class="sidebarWrap" id="featured">



			<h2>Stunna Babe of the Moment</h2>



			<div class="sbContent">



<script type="text/javascript" >NumberOfImagesToRotate = 12;FirstPart = '<img src="fansign/fan';LastPart = '.jpg" height="190" width="250">';function printImage() {var r = Math.ceil(Math.random() * NumberOfImagesToRotate);document.write(FirstPart + r + LastPart);}

printImage();</script>

<br><a href="http://www.stunnazine.com/fan-sign-submission.html">Be Seen! Submit your fan sign here</a>

		</div>

	</div>


<!-- End of Featured Stunna -->	



<!-- SZ Team  -->
<div class="sidebarWrap" id="team">
<h2>Advertisement</h2>

<div class="marTop">

<script type="text/javascript"><!--
google_ad_client = "ca-pub-7308943566145520";
/* bigger sidebar ad */
google_ad_slot = "4824911313";
google_ad_width = 250;
google_ad_height = 250;
//-->
</script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>

		</div>

	</div>
<!-- End of SZ Team  -->


<!-- Popular Post -->


	<div class="sidebarWrap" id="popPost">


			<h2>Popular Articles | Hot Topics</h2>


			<div class="sbContent">


			<ul>


			<? //popularPosts(5);
				 $popular = new WP_Query('orderby=comment_count&posts_per_page=10');
					 while ($popular->have_posts()) : $popular->the_post();
					?>
					<li>
					 <a title="<?php the_title(); ?>" href="<?php the_permalink() ?>"><?php the_title(); ?></a>
					 <!--<span><?php //comments_popup_link('0 Comment', '1 Comment', '% Comments', 'comments-link', ''); ?></span>-->
					</li>
					<?php endwhile;

			?>
			</ul>


			</div>

	</div>

<!-- End of Popular Post   -->


<!-- Support -->

<div class="sidebarWrap" id="support">

<h2>Donations</h2>

<div class="sbContent">

<form action="https://www.paypal.com/cgi-bin/webscr" method="post">

<input type="hidden" name="cmd" value="_s-xclick">

<input type="hidden" name="hosted_button_id" value="7051702"><input type="image" src="<?php bloginfo('template_directory'); ?>/images/btn_donate_SM.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!"></form>


<p>You can help keep this <a href="http://www.stunnazine.com/about.html">free webzine </a> online.</p>        

</div>
</div>



<!-- End of Support   -->


<!-- Cool Sites  -->

<div class="sidebarWrap" id="coolSite">
<h2>Our Friends</h2>
<div class="sbContent">
<ul class="leftCol divider">

<li><a href="http://www.hairflip.net" rel="nofollow" class="menulink">Page Graphics</a></li>

<li><a href="http://wemakeyoulaugh.blogspot.com/" rel="nofollow" class="menulink2">Make You Laugh</a></li>
</ul>
<ul class="leftCol">

<li><a href="http://www.steelcitymovement.webs.com" rel="nofollow" class="menulink">Konvict and Tip-Z</a> </li>

<li><a href="http://www.myspacehoz.com" rel="nofollow" class="menulink">MySpace Hoz</a></li>
</ul>

<div class="clear"><!-- --></div>
</div>
</div>
<!-- End of Cool Sites  -->
<?php endif; ?>

</div> <!-- End side bar -->

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

Select allOpen in new window