i have created a windows form application,created a setup file for it for my personal use .,now i want to protect it.,like anybody can mail the setup and use it in their systems,i do not want it.In software cd's they ask for product key.,though not that much.,i want a simple username and password to at least pop up when somebody uses my setup(without my knowledge).,how to add it to the setup.,i tried the user interface options.,but nothing was useful..i have no idea.,pls help.