I have an application at a manufacturing facility. On third shift there are some computer savvy workers who busy themselves changing settings on the computer. I'd like to find a way to prevent them from using the windows key, ctrl-alt-delete or ctrl-tab. I've been experimenting with the event structure and the KeyDown? event. I read that if I wire a true constant to the Discard property, the key press will not execute. This did not work, but I'm not sure if I'm meeting all the requirements. Does anyone have any suggestions?