Microsoft has released the Microsoft Office XP Web Services Toolkit 2.0. Thanks Christian.
The Microsoft Office XP Web Services Toolkit 2.0 brings the power of XML Web services to Office XP by enabling developers to use the Universal Description, Discovery, and Integration (UDDI) Business Registry or the URL to a Web Services Description Language (WSDL) file to reference XML Web services in Office XP solutions directly from within the Visual Basic Editor.Download