Merging menus

Sure. Look in sidebar.php for something like :
<div class="sb-latest"><h2><?php _e('Latest'); ?></h2>

Then take what Meta data you want and add to the bottom of the above code.

Everyone’s is a bit different but should be similar to this:

<?php if ( (is_home()) or (is_search() or (is_404()) or ($notfound == '1')) or ( (is_archive()) && (!is_author()) ) ) { ?>
<div class="sb-latest"><h2><?php _e('Latest'); ?></h2>
<span class="metalink"><a href="<?php bloginfo('rss2_url'); ?>" title="RSS Feed for Blog Entries" class="feedlink"><img src="<?php bloginfo('template_directory'); ?>/images/feed.png" alt="RSS" /></a></span>
<ul>
<?php wp_get_archives('type=postbypost&limit=10'); ?>
</ul>
<ul>
<li><?php wp_loginout(); ?></li>
<li><a href="http://validator.w3.org/check/referer" title="<?php _e('This page validates as XHTML 1.0 Transitional'); ?>"><?php _e('Valid <abbr title="eXtensible HyperText Markup Language">XHTML</abbr>'); ?></a></li></div>
<?php } ?>