Serialize / Deserialize JSON string with ServiceStack Lib

I need a simple demo app which serializes objects into normal "strings" and then back to objects using the open source ServiceStack library for .Net. Attached you will find the VS2010 demo project, look at the file [login to view URL] to see what you have to do. Requirements: - Use .Net 4.0 - Use the newest version of the ServiceStack library - I'm only interested in the code so GUI or comments [login to view URL] not necessary - The serialized strings must be in the JSON format (not SOAP or JSV or whatever, just JSON)