You'll need to supply a few more details if you want useful help.
1. How many lights need to be individually controlled?
2. Will the lights simply turn on and off or will the blink, fade, have some other kind of effect, etc?
3. Once turned on, will they go off automatically after a delay or will they go off when the transmitter button is pressed again?
4. What range would you like the transmitter to work over?
5. What power source will you be using in the model? AA, AAA, etc?