You just have to know where to look!
http://www.anotherurl.com/webservice1/service1.asmx
Here's an example. Start with a new project. C# console application...
Add the web reference...
There's a highly accurate latitude longitude conversion routine at http://www.anotherurl.com/webservice1/service1.asmx
Click "Add Reference". The solution explorer tree updates...
Entering code directly picks up the interface after the "com."....
..but leads up up a blind alley...
.. until you're directed...
..then we're almost home...
... and dried. Run it!
With a breakpoint set, the return value can be inspected.