Gonna play hell with the old ABC acronym -- Airway, Breathing, Compression -- but they say it's better. Plus there are folks who might not be willing to do mouth-to-mouth who would pump the chest.
Not so hard to remember: Guy not breathing? Get him a CAB!
So, it's thirty compressions first, then two breaths. Repeat until medical help arrives or the victim sits up and wonders why you are trying to break his ribs ...
Story here.