I agree with Bill that the original post insists the headlight switch must be on to start the car, but I don't totally buy this description. It's just too weird. Maybe the post was simply poorly worded.
Whatever the case, the answer lies in installing the familiar headlights-on warning buzzer. This gadget will solve the real problem, that of the dead battery. Karispost should investigate finding a suitable system and someone to install it. Many DIYers are turning to Radio Shack for cheap $3 12v-piezo buzzers.