I need help on central locking? can any1 help

[tylerkid]

I have got a fiat bravo 1.6 with central locking not remote.I have just brought to doors which are delocked. I can only open the door when key is in the ignition and turned so you got power so i cant get in car.Do i buy a remote central locking kit will this put power to the botton so the doors can pop open ? ?