Programmers wanted for questions and answers site

We are interested in building a site where people can ask questions and get answers from various experts. The site will need: 1) A registration form for people asking questions and for experts. 2) A form for asking a question. 3) A form for answering a question. 4) A place where experts can see pending questions and decide whether to answer them. 5) A private message board where the user who asked the question can communicate with each expert that answers their question. 6) A form that will allow each expert to create a personal "About me" page. 7) An admin interface for managing site properties, questions and the categories questions can be posted in. We will need the site to be coded in VB.NET with SQL Server 2005. Please bid only if you have at least 2 years experience in .NET. Thank you