"The WCF REST Starter Kit is a set of features, Visual Studio templates, samples and guidance that enable users to create REST style services using WCF. While the October release of the WCF REST Starter Kit focused on building server-side REST services, the Preview 2 release adds features to make client-side REST development easier. Chief among the new functionality included in Preview 2 is a new class that provides a staged pipeline model for requesting resources over the web. Using this new HTTP client class allows the developer to plug into the various stages of communication to handle custom authentication, caching, and fault handling outside of the client’s application logic."
The goal is to provide a toolset that simplifies building RESTful services today, and to take feedback from the developer community on the features provided in the WCF REST Starter Kit that will shape future REST capabilities in WCF in .NET 4.
You can download the kit from here