Another "Photo Slideshow Using XML and Flash" question

programming flash
1

http://www.kirupa.com/developer/mx2004/xml_slideshow.htm
Here is my doubt:
I’m using this xml structure instead that the given one:

<images>
  <section>
    <picture>
       <image />
       <description />
    </picture>
  </section>
  <section>
    <picture>
       <image />
       <description />
    </picture>
  </section>
</images>

Once it’s parsed, is there a simple way to change the section node you are in? I’ve tried several ways, but my actionscript skills are very poor.
Thanks in advance