Alright, I need some help from the iPod experts amongst us. I got an iPod Nano (2nd Gen) for free a couple of days ago, and I'm having a little trouble with it. I've installed iTunes on my laptop, and yesterday I purchased a USB charging/transfer cable at Wal-Mart. However, when I plug the iPod into my laptop, nothing happens. I thought maybe the USB ports on the laptop weren't powerful enough, so I also tried everything on the desktop, with the same result. The iPod shows that it's charging, so the cable evidently isn't the problem. Is there something else I have to do to get the computer and/or iTunes to recognize the Nano?