Programming Power Locks?

I just purchased a 2003 Accord EX w/L and I'm disappointed that the power door locks don't automatically engage at approx. 15mph like my old Caravan. Someone mentioned to me that their Chevy Blazer was the same until they programmed the locks by turning the ignition switch through a sequence, then pressing the door lock switch in a certain sequence. I found no mention of anything like this in the Accord's manual. With all the technical expertise here, maybe someone can steer me in the right direction. Thanks.