Hi lolnyancats, there are multiple ways how to start Firefox in private browsing mode. If you want to use a shortcut parameter, follow the instructions below: # Create firefox shortcut; # Right-click on the shortcut, choose properties; # Edit location (not name), file path and file name followed by the command line argument "-private", e.g.: "C:\Program Files\Mozilla Firefox\firefox.exe" -prvate; # Save changes. When you double click the modified shortcut you have just created, Firefox will start in private browsing window. Other cmd line parameters you could possibly use and further info.: http://kb.mozillazine.org/Command_line_arguments