I received my 4G ipod on Tuesday and plugged it into my iBook g4 firewire port. Synced it up, got all the music on the ipod. Now, when i plug in the iPod, the screen says Do Not Disconnect. Unfortunately, iTunes doesnt open when I plug it in. I opened iTunes and dont see the ipod either on the bottom, or on the left next to my playlists. I can see on the screen of the iPod that it is charging, so apparently (at least some) of the hardware is working. I have no idea what has changed between Tuesday and Today. Any suggestions?