Concept Code - Access Windows File System using Silverlight and WCF Services - 1

Hello, I require a Silverlight sample app and WCF Code, creating using C#, .Net Framework 4.0 and Silverlight 5.0 The sample Silverlight Application will allow a user to put in a username, password and domain. They also add in a file location, such as C:\ or [\\server1\share$][1]. They click connect. The WCF is passed the details and the WCF Service itself connects to the file location - using a Treeview to enumerate the Files and Directories. If it doesn't exist it should return an error, or return an error if the Username/Password is incorrect. Thanks