>>I'm pretty sure that you will need to have their DLL that contains their "CustomClientNamespace" so you can reference it in the project where you are calling their methods. Have they given that to you? > >No, I have not received that. I have only the link to the WSDL and some Word doc about the parameters. > >But, if I would have the DLL, so to reference it in our project, what more will it give?
See my reply to Viv. If they are not using .NET, you probably can't use their DLL anyway.