Hello, I have a 30 GB iPod and a Macbook. I have synced my iPod once on my Macbook and it worked fine. I brought my iPod to work (which only has PCs), and I've been charging my iPod on the PC. The PC doesn't have iTunes, so the PC treats the iPod like it's just a mass storage device but it still charges fine. Also, the "Format" label under the settings in the iPod now says "Windows." Now I am wanting to re-sync my iPod to my Mac to add more music, but when I do, the Mac doesn't acknowledge that the iPod is even connected (not even in the Finder window). Is this a common problem? I've read some about having to reformat the iPod on the PC's iTunes, but I don't have access to a PC with iTunes. Am I screwed?