I recently bought an ibook G3 from a guy who said it needed a new OS. when i turned on the computer it has a non back lit screen (which makes it incredibly hard to see) but there is def a folder looking icon with a "?" in it. I bought a copy of OS X tiger from the tech shop at here at KU. How do i go about installing it? b/c when i put the disk in nothing happens. so I dunno how I am suppose to go about installing this. any help would be great! Thanks guys and gals!