yup, you need to learn some CSS and how to look at the generated source of the page. When you add a new widget area to the header and add teh META widget in, you will get something like this
HTML Code:
<div id="my_new_widget_area" class="bfa_widget_area">
<div id="meta-5" class="widget widget_meta">
<div class="widget-title"><h3>xxxyyy</h3></div>
<ul>
<li><a href="http://yourdomain.com/wp-admin/">Site Admin</a></li>
<li><a href="http://yourdomain.com/wp-login.php?action=logout&_wpnonce=915169cc32">Log out</a></li>
<li><a href="http://yourdomain.com/?feed=rss2" title="Syndicate this site using RSS 2.0">Entries <abbr title="Really Simple Syndication">RSS</abbr></a></li>
<li><a href="http://yourdomain.com/?feed=comments-rss2" title="The latest comments to all posts in RSS">Comments <abbr title="Really Simple Syndication">RSS</abbr></a></li>
<li><a href="http://wordpress.org/" title="Powered by WordPress, state-of-the-art semantic personal publishing platform.">WordPress.org</a></li>
</ul></div></div> <div class="horbar2"> </div>
so by looking at this you can see that you can build your CSS Selector using
div#my_new_widget_area as the high level selector to narrow your CSS rules to this element.
Hope this helps. (p.s. I use 'Sams Teach Yourself CSS in 10 minutes' and lots of google searches)