Flash MX XML News Feed (PLEASE HELP!)

I am new to all of this, so please bear with me!
I have just got a copy of flash MX, and have been told that it can import and mess around with xml from any source.
I need to get the xml from this source:
http://p.moreover.com/cgi-local/page?c=UK%20news&o=xml
which is in this kind of format:

  • <moreovernews>
    • <article id="_130300896">
      <url>http://c.moreover.com/click/here.pl?x130300896</url>
      <headline_text>Labour chief whip calls in Short</headline_text>
      <source>BBC</source>
      <media_type>text</media_type>
      <cluster>moreover…</cluster>
      <tagline />
      <document_url>http://news.bbc.co.uk</document_url>
      <harvest_time>Mar 4 2004 1:04PM</harvest_time>
      <access_registration />
      <access_status />
      </article>
      I need to take out the ‘headline_text’, and ‘document_url’ sections, and put them into a horizontal scrolling bar across the bottom of the page, with the text scrolling across the bottom, and when the mouse is put over it, the hyperlink accessible.
      Any help that i can get would be greatly appreciated, becasue i am really, really struggling with this at the moment. I don’t really even know where to start.
      With thanks,
      Matthew King