Does a dialogue box pop up  from the AutoCAD tray area every time you print to let you know there aren't any errors. Enter TRAYNOTIFY at the command line and set it to (0) to turn this annoying feature off.  Why have to close a dialogue box every time you print?  The notification is still available in the tray unless you also turn off the tray icons by entering a (0) for the TRAYICONS variable.  You might want to keep this second variable on, it's not as annoying as the plot notification box.