Time out page and disable CTRL+N.....

Originally posted by : niclas (niclas_m@spray.no)Got a password protected asp-page (with a form on it). The only way users should enter the page is to type in a password in another page and submit it. I want to disable users from using their "Back" button to reenter the (password protected )page and change the information they have posted after submitting. I've noticed this function somewhere, when you try to hit the back button you get a "The data on this page has expired" or something...How do I do this in asp?Also, are there any way to disable the users from hitting CTRL+N in ie and get an exact duplicate of the password protected page while they are on it..?