API/EPP Platform Setup

I will provide you with a clean Windows 2003 server. I would like you / your company to make the necessary setup to communicate to other API server through XML. ( I will then use the server for API domain registration purpose). I will provide you with a hand-shaking message and you need to demonstrate to me for the received feedback and how to process. You need to provide me with a written setup steps at the end. I prefer to use ASP instead of ASP.NET, if possible. Process in PHP is OK, if you prefer Linux, but you need to explain to me the complexity. Full Escrow Payment will be provided.