Need a c# app

I need a c # app which will work on background as a windows service. It will do as follow: I'll be having a folder locally, the app will do a socket call, I'll give you a hostname and port for the ft server, it will check for the files, and create same files in folder locally but with 0 size (means no content in it), and if user access the file in local folder, at the same time app will connect to ft server, get the content of that file, overwrite it and open that file infront of user. I need someone to start right now and complete asap. The lowest will win. Thankyou!