Accessing external webvservice from WAS 6.2

Hi,

I am trying to access a web service from http://www.webservicex.net/globalweather.asmx

when I execute the request_response method of the CSoapTransportHttp class object i get a communications failed exception, I am however able to contact a webservise running on my system, which in turn calls the aforementioned webservice, my question thus is, do i need to configure some addtional settings like the specifying the proxy server and if so then how to go about it.

Thanks and Regards,

Aniruddha