desktop app. - .NET, C#, PHP, MYSQL

Hi, I need a desktop application that will be similar to [login to view URL] It needs to be peer-to-peer between the users. I have a server so you can use PHP/MySQL to store the people ID's there. The report system would work like this : If someone (an ID or IP Adress) has 5 reports in a 5 minutes time span, he will be banned for 1 hour. I also need to be able to put some people moderator, and they would be able to click a "Ban" button to ban someone (His IP adress) for 24 hours. Except this, the rest should be similar to [login to view URL] Technologies used could be : desktop application - .NET Framework 3.5, C# language, ORM,WCF? server application - LAMP (linux+apache+mysql+php) Or windows... I would use a dedicated server from : <[login to view URL]> ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows? (depending on the nature? of the deliverables): a)? For web sites or? other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software? installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Windows XP, Vista, Windows 7 and different SP's. If possible MAC...