help in web services

Basic requirements and assumptions
(i) The application should be developed using the .NET programming
environment.
(ii) There are three different conversion services: Temperature, Distance, and
Height.
(iii) Each server notifies the broker about itself and the service that it is able to
provide.
(iv) The client does not have knowledge of the web services. It must make use
of the services of the broker for contacting the relevant web service.
(v) The broker has complete knowledge of all available web services.
(vi) After contacting the broker, the client can send a direct request to the server
or the query can be resolved via the broker.
(vii) A response should be sent back to the client and displayed on the screen.
(viii) User interaction should be through a GUI

Please post any code..as soon as possible.
Thank You,