Securing files on IIS

We host a large quantity of videos on our IIS5 web server. They are basically accessed in the form [login to view URL] We need a way to make sure that nobody can access this file via url. We only want to allow people to access it who are registered on our SQL database. We own our server completely so anything can be done to it within limits. We were thinking that a way of masking the url would be good as then nobody would know where the file is. We need for the file to be able to be watched by the media player 6 plug in. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Complete ownership and distribution copyrights to all work purchased. ## Platform Windows 2000 Server IIS5 IE5+