Moneypit is right. There are so many different "ways" to break in a motor. Some say to run it at 2500 or 3k for 25-45 minutes then change the oil and others say drive it easy for 500, change it, drive it for 1000, change it, then drive it for 3000 and change it, and then beat on it. I would go with the second method. The rings may be seated after the first 100 miles, but you never know, so just to be safe I would wait it out for ~5000 miles.
Joe