2007 disabling auto-unlock feature

I did quick search and couldn't find anything... purchased a 2007 Camry LE recently with very few bells and whistles.  There is feature I find quite annoying, the automagic unlocking of all 4 doors when turning off the car.  How can I disable this feature?  I couldn't find anything in the owner's manual either.
 
Thanks in advance.

you sure its not in the manual where it discusses the operation of your remote control?  the 02-06 which i have explains it in great detail and gives you like 4 or 5 different options such as locking/unlocking with ignition, putting the transmission in and out of park, etc and how to change it.

I don't have access to the car/manual at the moment but I will double check the manual as soon as I get a chance.  When I thumbed through it this weekend, I expected it to be in there as well.