I\'m trying to call a web service in an Excel Macro:
Set objHTTP = New MSXML.XMLHTTPRequest
objHTTP.Open \"post\", \"https://www.server.com/EIDEServer/EIDESe
looks more like you're using xml-rpc instead of soap. interact with the webservice using the soap type library at : http://msdn.microsoft.com/en-us/library/aa192537(office.11).aspx, or the one that corresponds with your ms office version
You SOAP action should also include namespace of the method e.g.
"http://tempri.org/PutSchedule"
Find out what the namespace of your Service and add it in front of the method name PutSchedule.