Reading XML with a Namespace via XElement

I'm working on an application that includes an RSS reader, and came across something I don't know how to handle.

The XML file is formed like so:

<?xml version="1.0" encoding="windows-1251"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>Feed Title</title><link>http://feed.net/</link><language>en</language><description>A really cool feed</description><generator>DataLife Engine</generator><item><title>Item Title</title><guid isPermaLink="true">http://feed.net/item.html</guid><link>http://feed.net/item.html</link><description><![CDATA[<div align="center">a bunch of HTML in here</div><br /><br />]]></description><category><![CDATA[Category Name]]></category><dc:creator>Creator Name</dc:creator><pubDate>Tue, 02 Mar 2010 17:34:33 +0300</pubDate></item></channel></rss>

The problem I have is this:

When I attempt to read the creator element with

NewItem.Creator = thisItem.Element("creator").Value;

I get an error, because thisItem.Element("creator") is null.  How can I correctly resolve this element?  I've tried

NewItem.Creator = thisItem.Element("dc:creator").Value;

but that gives me an error saying that ":" is not a valid character in an element name. 

I'm guessing I'll have to parse the namespace and prepend it to the element name, but how would I do that?

Thanks!

Gabe