Mapping an XML into a text file

Hi,

I want to transform an XML into a text file. I want to colapse the entire content of a complex node into a line, separating each simple field with a <b>||</b>. Something like:

XMLhttp://img329.imageshack.us/img329/5989/xmlvg3.png">XML>

into:

Text" target="_blank">http://img152.imageshack.us/img152/1573/textfilehj8.png">Text File

Do you know the most simple way to do that?

Regards

Gonzalo