To show related links at the side column. copy this code into a new HTML/Javascript widget and place at the side in the page elements section.
Again, If you already included jQuery into your blog. no need to do it again.




<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js" type="text/javascript"></script>
<script src="http://blogger-related-posts.googlecode.com/files/related-posts-widget-1.0.js" type="text/javascript"></script>
<script type="text/javascript">
relatedPostsWidget({
   'loadingText':'loading...'
});</script>