Google Sample Research Service does not response

I downloaded MS Office Research Service SDK and followed the
instructions in Microsoft Office 2003 Developer Resources\Microsoft
Office 2003 Research Service SDK\Samples\Google Sample, and deployed
the web service to IIS5. Everything works fine, except when a search is
submitted, the task pane says the the service is not responsing.
But is works fine when I open
http://localhost/GoogleResearchLibraryCSharp/Query.asmx?op=Query in IE
and submit the query manually.

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