I just left my job where I'd sync my iPhone4S via iTunes on a PC. I deactivated that iTunes account before I left. I want to start syncing my iPhone with my MacBook and iTunes at home. I don't know what to do. iTunes doesn't even acknowledge the device is connected (however iPhoto always starts and tries to sync photos, so I know it's not a USB issue). Does anyone know the secret to getting my phone to work with my Mac after being used with a PC? Thanks!