I have an old g3 ibook that has been in the care of my gf for about a year now since i bought a newer g4 ibook. She started complaining that if she tilts the screen at a certain angle the screen goes black , but that you can faintly see what on the screen. And that if she closes the lid, and reopens that the screen come back on. well its finally died, and no amount of screen closing revives it. i didnt know what was wrong with it until she said that the light on the apple on the back of the ibook no longer lights up either. so after some research, im thinking the lcd backlight is busted, or the backlight inverter is busted. how hard are these to replace and how can i confirm for sure that this is the problem? my laptop has been repaired a couple of times and there is a lot of wear and tear on the screws and the casing around the screws. i dont know how much more abuse the case can take before the area around the screw completely crack. so what do you think i should do folks ?