Do they occur for all file types? If so, start the registry editor and go to HKEY_CLASSES_ROOT\*\shell\ Delete any additional context menu items you don't need from there. If they only occur on certain file types, select the extension's folder in the left, notice the default value on the right, then scroll down on the left until you find the folder with the same name as the default value mentioned earlier. Open it, open the shell\, and continue as above. ...and since when did ZoneAlarm add a context menu entry?