I know C# is not the best program to use but it's the only one I know...sorta. Anyways I am making a program that holds CD-keys for my games and I want to be able to press a button on the Form and it inserts it into the boxes where the key is supposed to be entered. I asked on another forum and they said they you have to 'hook' the application. How would I do this? Could you give an example?