15. The system of claim 14 , wherein the engine is operative to display a plurality of the video files at the user interface in a continuous sequence the order of which is defined by a user's answers to questions from the database.
14. The system of claim 9 , wherein the database further comprises one or more video files, wherein the engine is operative to display one or more of the one or more video files at the user interface, and wherein further the one or more video files are associated with the predefined questions and answers of the database so that the display of one or more video files at the user interface is dependent upon a user's answers to questions from the database.