ASP.NET (VB.NET or C#) and XML Web Services.

I wanting to build website service using asp.net or C#, the website is stock management system for a company which have recently opened and need assistance on there website and on-line database So the website should have 4 main pages Home page About page -about companies products Log in page - staff log in and customer log in Contact page The website should expose the stock level and availability for branches which Log in page for staff from other branches or stores can log on to website in the log in page and do requisition order when they don’t have item in stock in there own branch. Staff at that particular branch should be able to record everything that they have sold in the branch database, the staff should be to log into the database and edit or update in the branch sales. Create ASP.Net page which consumes XML Web service(s) of branch to display their current range and availability of catalogue items Create an ASP.Net which allows staff at your branch to place an on-line requisition order with a selected branch by consuming their XML Web service. system must authenticate staff at each branch. Once I pick the person I send them full details through email