Hey now! Quick question......I'm new to this iPhone stuff and I'm curious, what is the difference EXACTLY between a sync and a backup? My iPhone automatically syncs everytime I plug it into the PC. But I notice if I right click on my iPhone icon under devices in iTunes there is a Backup option. My phone is jailbroken and I'm thinking about upating to 2.2.1 and I don't want to lose any apps, contacts, info, etc. Please SPECIFICALLY tell me as if you were talking to a six year old! Thanks!