So earlier today I traded my friend my old iPhone 3G for some cash and a iPod Touch. He told me the iPod's touch screen was no longer responsive and I agreed. So when I got home I tried restoring it, hard resetting it, un-jailbraking it, putting iOS 4.0 on it but the screen does still not respond to touch. So I'm almost positive its not software related. Any idea of what it could be? At this point I'm guessing just a bad touch screen that could be replaced. How hard is it to replace one of these? I may replace it or just sell it on ebay broken as-is.