Managing Internet content on local machine(repost)

We have science lectures on our Internet server. Some of these lectures are very heavy and take lot of time to download on end user desktops. We need an application that allows us to put encrypted lectures on local machine of end users. Application should allow user to run the application on only one machine. User should be allowed to surrender machine specific license and move to a new machine. Application should pass? the time spent, by user,? on lectures to our central servers. The time spent data has to be integrated with our application running on Central server. Each user will have maximum? limit to total time they can consume seeing the lectures. The limit will be set on Central server. The max. time limit should be passed on to the user on first log in. User should be able to view lectures even without internet connection. However lecture should stop running the moment total time is exhausted. Application should run on Mac, XP, Vista and other window os.? Central? server stores lectures in the following format -? Stream > Course > Subject > Topic? > Chapter > Article Lectures are stored in Article field. The database used on server? is Oracle 10g. Desktop application should also have same structure. ? Each article has associated 'Examples'field which can also store flash video lecures.? Ideally Oracle 10g application should automatically migrate lectures with above mentioned format to the application created. These lectures then should be encrypted by Admin side of application and desktop application should be produced ready for distribution on CD/DVD. ? The desktop application should have features described initially. ? O ? ## Deliverables Lectures will be in flash. * * *This broadcast message was sent to all bidders on Saturday Jun 6, 2009 3:16:42 AM: Pl check the requirement details. There is a change. * * *This broadcast message was sent to all bidders on Tuesday Jun 9, 2009 8:21:47 AM: We are in the process of evaluation of bidders. We have attached file for more clarity on structure of science lectures. Please have a look. Also description is improved. Any confusion - Pl feel free to ask