HTTP Error 401 while invoking WSDL

Hi Gurus,
The scenario is, a WSDL URL location requires a System login to view it from IE.
When I use the same WSDL location in my BPEL, I get an HTTP Error 401 (Unauthorized) as it requires the same Login Credentials that I used to view it in IE.
Now, can any of you please tell me how to pass this Login credentials to access the WSDL file without getting HTTP 401 error.
Please help. Thanks.
Bala

Muruga,
Thanks for your reply.
Let me explain little better...
Actually, I have a WSDL URL, which requires a System login in order to access it. In otherwords, the WebService for that WSDL is running remotely and it requires a System Login. Now, I am using that WSDL in my BPEL to create a Partnerlink. When I run the BPEL process, I am getting HTTP 401 error as the Remote system where the WebService is running, needs a login. I know the userid/password for that system...but how do I provide it in the WSDL/BPEL.
Hope the question is little clear now...
Thanks
Bala

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Thank advance
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