I own a PC laptop, but I just bought an iMac and will want to put all my music on there. I got a 250 GB hard drive on the Mac which dwarfs my 30 GB hard drive on my laptop, which simply can't hold all 20 GB of music on my iPod. So I'm wondering if I should back up all my music and then reformat the iPod for Mac instead of Windows to run primarily on my Mac. But will I be able to plug it in to my PC too and it recognize it? I know it works the other way around with Windows formatted working on Mac, but I don't know if it works the other way around. I would likely delete most, if not all, of my music from my laptop. So if I ever wanted to listen to music with my laptop, I'd connect my iPod to it. Is there a better way to go about this maybe?