Can you add keyless entry to a standard car?

I have a 2007 KIA Rio. It has plain crank windows and you need to lock each door individually. So my question is, is it possible to make it central locking and thus using keyless entry ? Also, I only have one key for the car, aside from the KIA dealership, where else can I get a key made for it?ThanksAny locksmith can make a door key but if the ignition key has a chip in it you will have to shop around for a locksmith with the right equipment to program te chip.As far as keyless entry it can be done but will be a little expensive because a lock actuator will have to be installed into each door.You can check prices for that at local stereo/alarm shops