Door Lock Engaging while Driving

[PK]

is there anyway that we could change from just unlocking and locking them ourselves to when we start the car the locks would lock and then everytime you change to parking they would unlock like in nice new cars?

That's exactly what my after market alarm does.

You have the option -
Want doors locked while driving - shut both doors and then start engine - doors lock - stop engine - both doors unlock.

Want doors unlocked while driving - leave one door open - start engine - shut door - doors stay unlocked.

Alarm also has 2 function immobiliser - cuts ignition and fuel system.
Gives remote entry from about 100 yds away.
Can be rigged for remote start if you want, but it doesn't get that cold down here.

I think the brand name was Black Spider - will have to check to make sure, but it is Aussie built so no help for most of you.

Regards
PK