If you don't have alot of money i would suggest getting a some cfl's .. But you will need a couple hundred watts to get anything decent. Maybe a small 150w hps would be better and less $ in the longrun.
You can order a nice little 150 online for less than a hundred bux, with reflector bulb and all... you just got to look around a bit.
Ebay, or InsideSun has some nice lights for little of nothing.