Restricting URL's

Need application in Delphi or will consider VB6, if the requirements can me met, that would block all URL's, unless they are in the approved list in a listbox or listview. This app. will have the following features, support IE, Netscape, and Opera, run in system tray, allow approve list to be added to popup menu dynamically, password protected. Have a white list that user can add sites they want to have approved. Allow user to add to the whitelist from there favorites/bookmarks list. Application must load when system starts up and disable "ctlr-atl-del" while app. is running. ## Deliverables Complete and fully-functional working program in executable form as well as complete source code of all work done. And documentation and setup program.