I have an executable that I call using System Exec.vi. The executable opens when I use system exec, but it needs CTRL + S to run. So I want to simulate that keystroke. Also, once it completes, I want to simulate keystrokes to close. In short, I do not want the user to do anything other than run the VI which has system exec.vi. Everything else is done by simulating keystrokes which in turn depend on some conditions I would generate. Thanks.