VB6 call Web Service

[Tabo]

I want to know how can i pass parameters to web service
and get back the result. I tried taht over 1 day. But it
is not worked and returned error
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Run-time error '-2147024809(80070057)':

WSDLReader:Could not find '/definitions' inside the
default WSDL namespace HRESULT=0x80004005: Unspecified
error - WSDLReader:Loading of the WSDL file failed
HRESULT=0x80004005: Unspecified erorr - Client:One of the
parameters supplied is invalid. HRESULT = 0x80070057:The
parameter is incorrect.Thanks for your help!