In the near future I'm going to a cyber café with Apple computers. I'll turn off iTunes Auto-synch before plugging in the iTouch. A 'Check For Update' dialog button will present itself somewhere on the iTunes window after plugging in. Ticking the update button and the upgrade procedure will begin. Is there any further info I should know about and understand? I don't want to wipe out documents or lose my apps from an auto-restore, or some other iTunes quirk I should know of beforehand. Thanks.