Power lock/keyless entry issue

[jaris]

So I bought a 09 yaris sedan without the power package. For Christmas, my parents took it in to get an alarm/keyless entry. Everything works great, except that after I start the car, the doors lock...which is fine except that if someone wants to get in (after I have started the engine) I have to reach over and unlock the door. The alarm is a Viper, probably one of the more basic models. My questions are:

1. Is there any way to unlock the doors using the Viper remote because the unlock button doesn't do anything after I have started the engine?

2. Now that all 4 doors have power locks, it seems to me that it would be easier to install a power lock switch/button in the middle console by the e-brake. I have limited knowledge of cars, but I'm willing to dive in if anyone could help. What could I do to install the switch, also what would be the part # for the switch?

Thanks