I was given an IBOOK G4. The problem is, that it has a cracked screen. Of course I won't be able to see anything. I'm just wondering, if I were to get a cable for an external monitor. Would It automatically show on the external monitor after plugging in the cable? Of course I won't be able to select "external monitor" since the screen is broken. How would I do it? is there a command I can do to make it go to external? please help would be appreciated! thanks