This video demonstrates using the Web Service Generator in the context of a Web Form project. The user types an address into form1... an address verification web service is called... the web service results are displayed on form2.
Sturnbow, I read several other web service entries and was able to figure out how to create a Web Service with input AND output.
So for the benefit of other members who have a similar question, attached is workflow that inputs and outputs. It is very simple but does the job (so you get the idea) and expand upon it. Essentially create a decision project and use its Input Data AND Output Data features.