Develop C# asp.net page that creates a snapshot of the web page by Url in security context

This project is to develop C# asp.net page that creates a snapshot of the web page by Url and saves it graphic image. Required functionality should be similar to the "print screen" function. Can use open-source libraries if needed IMPORTANT: The asp.net page will be hosted on a secured web site. First, to access the page the user will athenticate himself. The same security context should be used to create a snapshot of other pages by Url, as those pages are located on secured sites. The current user's credentials must be passed on. The current user is granted access to other pages. Delivery is VS2008-2010 solution Bid only if you know how to accomplish the task.