Sorting and unique nodes

Hi all !!

How can i process an XML document like ...

<root>
  <group>
    <section>One</section>
  </group>
  <group>
    <section>Two</section>
  </group>
  <group>
    <section>Two</section>
  </group>
  <group>
    <section>Two</section>
  </group>
  <group>
    <section>Three</section>
  </group>
</root>

... an obtain ...

<ul>
   <li>One</li>
   <li>Two</li>
   <li>Three</li>
</ul>


I would like to access the "SECTION" nodes that have a different values
:)

Thanks in advance.

-- 
============================
Ricardo Borillo Domenech
Programació - Servei d'Informàtica
Universitat Jaume I


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