Automate testing ASP.net WebApi using C# - Console app or UI

Presently the client is using fiddler and Http dev to test APIs ( rest based) He needs to write some automation (could be console) to send requests and capture resposes in XML, JSON. The apps should be written in C# ( Visual Studio 2008 or 2010 ) Please read the project first and write the word "Understood". Also write your steps and suggestions to complete the project with a short description of what you understood.