Remove Text from XHTML and Make XML

I have some HTML files I've converted to XHTML using Tidy.

Now I want to strip the text from the XHTML and make the text XML such that the XML looks like:

VB Code:

<FUNCTION>
    <NAME>
    </NAME>
    <DESCRIPTION>
    </DESCRIPTION>
    <DECLARATION>
    </DECLARATION>
    <OS>
    </OS>
    <LIBRARY>
    </LIBRARY>   
    <PARAMETERS>
    </PARAMETERS>
    <RETURNS>
    </RETURNS>    
    <EXAMPLES>
    </EXAMPLES>
    <RELATED>
    </RELATED>
<FUNCTION>

QUESTION:

What would be the best way to move the text to the above XML format -- using XSL or VB?

If XSL, how do I go about getting the XSL to ignore everything other than the text which is deeply embedded in the HTML?

Stated another way --

If the text is embedded deep in the node, such that there are multi <table> </table> tags before getting to the text of interest, what is the fastest way to skip over these <table> tags until I get to the one that contains the text?

THanks
David