[Zope] Displaying list of documents in sub-folders?

[EvH]

Hello,

I'm still a newbie at Zope, so please bear with me as I read through the 
Zope Book and experiment...

In the main page, I'd like to have a index_html DTML Method object display 
a list of documents that are located in sub-folders, eg. computers/, news/

The following doesn't work:

<dtml-in expr="objectValues('computers/DTML Document')">
     <tr>
     <td><a href="&dtml-absolute_url;"><dtml-var title_or_id></a></td>
     </tr>
</dtml-in>

Should I use a Python Script object instead?

Any tip much appreciated
Eddie.