Gabe, export will give you not the same xml as for rendering. Most kind of custom scripts will work though.

UDT3.3.6 has an option showXml below the url control for custom stylesheets inside manageUDT.

Gabe, my first answer inside this thread contained a very simple stylesheet that is working for a UDT with the columns Name, LastName and Titel (sorrry misspelled or german for Title).

<xsl:stylesheet version='1.0' xmlns:xsl='http://www.w3.org/1999/XSL/Transform' xmlns:udt="DotNetNuke/UserDefinedTable">
   <xsl:template match="/udt:UserDefinedTable">
      <xsl:for-each select="udt:Data">
        <strong><xsl:value-of select="udt:Name" /> <xsl:value-of select="udt:LastName" /></strong>
        <br><xsl:value-of select="udt:Titel" />
      </xsl:for-each> 
   </xsl:template>
</xsl:stylesheet>

if you want to render it in a table:

<xsl:stylesheet version='1.0' xmlns:xsl='http://www.w3.org/1999/XSL/Transform' xmlns:udt="DotNetNuke/UserDefinedTable">
   <xsl:template match="/udt:UserDefinedTable">
      <table>
         <xsl:for-each select="udt:Data">
           <tr>
              <td>
                 <strong><xsl:value-of select="udt:Name" /> <xsl:value-of select="udt:LastName" /></strong>
              </td>
              <td>
                 <xsl:value-of select="udt:Titel" />
              </td>
           </tr>
         </xsl:for-each>
      </table> 
   </xsl:template>
</xsl:stylesheet>

I don't know any free XSL ide which is free, but there are a lot of trial versions aviable, for example for:

• VisualStudio 2005 (>=Standard Edition)
• Altova Xml Spy
• Stylus Studio
• ....

I recommend the w3 school as a good start into learning XSLT.

Advanced sample regarding udt: http://www.dotnetnuke.com/tabid/825/EntryID/1038/Default.aspx