Well, there is no easy way to do so, there are several php function able to parse xml and thus to retrieve elements sorted in arrays, but the next version of mx Google sitemaps will do so much more that working to hard on this right now would be time loss.

Just to tease you a bit, it will have a cache with full gunzip support (on the hd and while sending the files), will output urllists.txt and rss feeds

++

Excellent. I find one subdreamer plugin that outputs rss feeds. Its called rss syndication. The only thing i have to do is set the output to 500 articles in order to show my entire content.

Look at this: http://www.tupincho.net/plugins/p47_rsssyn/rssfeed.php

I also put one link to all my google sitemaps, urllist.txt, and this yahoo rss feed at my sites overal footer. The same with the forum. I hope minor robots could follow some of theese links and index more pages from my site