Check out this web site... KP Technologies. Buy the "Window Roll-up" module for $59.95 and it comes with the door lock feature. Only thing is that the doors lock about 4 seconds after you start the car, whether your doors are open or closed. Just make sure not to start your car with the door open, then go back into the house to get the thing you forgot to grab and close the car door. This scenario will leave you locked out of your running car... D'oh!

<font color=blue>The above statements are only my take on the issue. If you disagree with anything I typed then you are 100% right!</font color=blue>