[Mediawiki-l] Articles of more than one category - new question

[WikiPlant]

Hi folks ;)
I've successfully installed the DynamicPageList-Extension for MediaWiki 
now, and now it's possible to write into articles (for example)
   <DynamicPageList>
   category=cat1
   category=cat2
   </DynamicPageList>
and a list is shown of articles with the categories cat1 and cat2.

How can I connect this function with a new Special-Page where it says 
e.g. 
http://domainname.com/wiki/index.php?title=Special:NAMEOFSPECIALPAGE&category=cat1&category=cat2 
and then the results are shown on the page?

Is this possible? :-[
Thanks, Flo from Berlin