I followed the excellent video instructions on ifixipodsfast.com and fixed the iPod in about 15 minutes. I didn't have a non-marring pry tool handy so I used a small electronics screwdriver. It left a very small mark on the one side from prying. Then I applied the screen protector, basically a clear sticker, to the ipod screen. I bought it thinking that it would prevent further scratches to the iPod screen -- that my screen wouldn't get any worse than it was. But when I applied the screen protector, the screen instantly took on it's original glossy look.
None of the scratches accumulated during 3 years of ownership were visible any longer. I have a suspicion that a lot of people throw away electronics simply because they look old. If more people knew about screen protectors, maybe they could save their money for other things, or spend less time working and more time having fun riding bikes.