Hi
Simply "cut" the section..

<div class="bSideItem">
		<h3>Recent Referers</h3>

						<ul>
									<li><a href="http://forums.b2evolution.net/viewtopic.php?t=4715">forums.b2evolution.net</a></li>
									<li><a href="http://www.universalsims.com/index.php?ind=blog&amp;op=home&amp;idu=9398">universalsims.com</a></li>
									<li><a href="http://benoregan.tk/">benoregan.tk</a></li>
									<li><a href="http://benoregan.tk/">benoregan.tk</a></li>
									<li><a href="http://benoregan.tk/">benoregan.tk</a></li>

								<li><a href="http://benoregan.com/index.php?disp=stats">more...</a></li>
			</ul>
		<br />
		<h3>Top Referers</h3>
						<ul>
									<li><a href="http://forums.whirlpool.net.au/forum-replies.cfm?t=297234&amp;p=5">forums.whirlpool.net.au</a></li>
									<li><a href="http://benoregan.tk/">benoregan.tk</a></li>

									<li><a href="http://www.u-gaming.com/home/user.php?id.175">u-gaming.com</a></li>
									<li><a href="http://simmersunder18.com/forum_viewtopic.php?12.8">simmersunder18.com</a></li>
									<li><a href="http://forums.b2evolution.net/viewtopic.php?t=4715">forums.b2evolution.net</a></li>
								<li><a href="http://benoregan.com/index.php?disp=stats">more...</a></li>
			</ul>
	</div>

and paste it between..

<p class="center">powered by<br />
<a href="http://b2evolution.net/" title="b2evolution home"><img src="../../img/b2evolution_logo_80.gif" alt="b2evolution" width="80" height="17" border="0" class="middle" /></a></p>

// <<-- PASTE IN HERE --> //
and the </div> that follows

There should be no reason for it to make a mess of the side bar as it's still withing the main sidebar div.