i have a 20Gb 3rd gen. ipod that i was using with my window pc (so it was formatted FAT). Now i have a macbookpro and the ipod wouldn't sync. neither restore to factory setting. So i reformated it (mac OS extended journaled) with macbookpro disc utility. Now it wont turn on, if i plug it to the mac i can see an apple on the ipod screen, but it is not recognized by the laptop... out! Should i find a window pc and reformat it FAT? THANKS>>