[Zope] RDFSummary problem

[Zanotti Michele]

Hi all,
I'm using Eionet's RDFSummary. I have Zope 2.6 on win2kpro, and my lan has a
MS proxy server with authentication. If I start Zope with the start.bat I
can connect, for example, to this page:
http://www.polare.com/news/HPE/xml/feeds/86/186.xml, but if I start Zope as
service, when I try to connect to the same RSS url, I have this error:
Error Type: URLError
URLError: <urlopen error (10061, 'Connection refused')>  
Can anyone explain this?
Thanks,
 Michele