Calling a Web Service Using VB6 with SOAP 3.0
http://www.aspfree.com/c/a/VB.NET/Calling-a-Web-Service-using-VB6-with-SOAP-30/

Krishnaswamy, Jayaram
ASP Free
2006

Abstract:

This article shows you how to create a client that calls a web service from Visual Basic 6 using SOAP 3.0. If you are still using Microsoft VB 6.0 or C++ and don't plan to move into VB.NET, you will find this method very useful.