Sharepoint rss now working

I've indstalled Microsoft Sahrepoint Services 2003. Everything works
normally, but I would like to have a rss web part. I've tried to add
the web part from "http://x5.tsiokos.com/posts/2005/01/11/wss-rss/";.
That went well and it appear on my screen. But I do not see the rss
feed only the title. And i shows a message like. "An error occurred
while processing the data for this request. Contact the server
administrator for more information". Does some one know what is
caussing this problem?

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