How to create an xml file from (a selection of) the filesystemtree?

[tjayvb]

How can I search through a (selected part of) the filesystem from a folder that the user can fill in, to build an output XML file that contains a structure of only the folders including files, the output should be like this
(so I only want the folders with files in it):
<xml>
<folder path=&quot;c:\dir\dir1&quot; title=&quot;dir dir1&quot;>
<file name=&quot;test.doc&quot;/>
<file name=&quot;test2.doc&quot;/>
<file name=&quot;test3.doc&quot;/>
</folder>
<folder path=&quot;c:\dir\dir2&quot; title=&quot;dir dir2&quot;>
<file name=&quot;test.doc&quot;/>
</folder>
<folder path=&quot;c:\dir\dir2\dir&quot; title=&quot;dir dir2 dir&quot;>
<file name=&quot;test.doc&quot;/>
</folder>
</xml>

thanks in advance for your reaction