Need two NSIS scripts

Need two NSIS scripts: 1. I want to have ExecWait with the ability to specify SW_HIDE parameters 2. I need a window that shows all open browsers window (I care about: IE, Opera, Chrome, FF, Safari) and their title and it will ask the user to close it, when the user press next it will check if a window is still open, if so it will refresh the current window, if not (all browsers have been closed) it will go to the next stage. I also want a button: close all, that will close all browsers and will continue to next stage.