To add a new screensaver display, copy the executable file for the display to the /usr/openwin/lib/xscreensaver/hacks directory. Add the command for the screensaver display to the XScreenSaver file or the $HOME/.xscreensaver file. Include any arguments that are required to run the screensaver display on the whole screen, rather than in a window. For example, you might want to include the -root option to display the screensaver display on the whole screen.