Ready to hop on the iPhone 5 bandwagon after tuning into yesterday's unveiling? Keep an eye on the clock and pull out a credit card, because Apple, AT&T, Sprint and Verizon will kick off online pre-orders tomorrow at 3:01AM (or at 12:01AM PT for folks on the West Coast). Sixth generation iPhones begin shipping on September 21st and start at $199.99 for 16GB models bound to two-year contracts. Those who relish a healthy dose of suspense can always test the hand of fate -- and retail availability -- by vi