I can't even get that far. When I attempt to create a proxy using that WSDL, either in PowerBuilder.Net or by running the .Net WSDL.exe tool against it directly, I get this:
Error: Cannot find definition for http://www.ultipro.com/services/loginservice:I
LoginService. Service Description with namespace http://www.ultipro.com/service
s/loginservice is missing.
Parameter name: name
It sounds like they may have updated the service and you've got an old WSDL, or there is something wrong with their service. You probably need to contact the vender to discover what is going on.