AJAX/REST Web Application Developer Needed

Seeking experienced, qualified developers to assist in converting our existing ASP.NET web application to a one compliant with W3C standards for (x)HTML, CSS, JavaScript, and JSON RESTful web services. We have identified 3 primary JavaScript Libraries with which to affect these changes and to manage the project during the conversion process and to maintain it once it is completed and deployed. In order of desirability, they are ExtJS, Dojo, and the Yahoo 2.0 UI. At present, we find the new “ExtJS Designer” most desirable as it offers the greatest ease of use valuable in maintaining and coordinating the project. The results we are seeking assume true separation of the styling using CSS, the (x)HTML mark-up, and the JavaScript/DOM manipulation. This will replace the need for ASP server controls and other legacy, non-compliant technology residing in our presentation layer. The site should be able to communicate with the server when necessary via Ajax/HTTP requests to REST-based web services written in C# .NET. At present, the data storage is handled by SQL Server 2005. However, we are very interested in utilizing document based storage mechanisms such as CouchDB, SimpleDB, Mongo, or others. Your expertise and assistance may be required in this realm secondarily.