ASP.net and C# developers for a XML/CSV-Edifact or Any-to-any mapping tool

We are looking for 2 developers, experienced on following: C# ASP.net MS SQL This is for at least 4 months, but could also turn out to be for a long term relationship. The system we need help for ais a kind of mapping tool. With which a user can maps dat from any to any format. Most important is EDIFACT/XML/CSV/TXT between each of them. Example of what we are looking for is Mapforce from [login to view URL], but now build for the web with C#/ ASP.net. If it turns out to be too difficult to build for the web, we switch to a desktop app. We need this tool for linking to another part of our system. Communications will be done on Skype, on a daily basis. Also contact with other developers, who are working on that other part of the system, is needed.