If you get the 23 watt big curly CFL, like at WalMart, you need two per square foot. For a 3 x 3 tent, you would need 18 of them. So 18 bulbs, 18 sockets, reflectors so most of the light goes down. This is why people spend money on lights! You can get ViaVolt 1-Light 400-Watt HPS/MH White Grow Light System with Timer/Remote Ballast and Reflector at home depot for $179. Much less hassle.
If you have a 4 x 4 tent, then you would need 34 of those CFLs! Or an 800 watt HPS kit.
So what I would suggest is you make a much smaller grow space inside your tent with big white painted cardboard sheets or a tall 2 x 2 box. If you make a 2 x 2 space, you can still grow one plant with just 9 of those CFLs. You can make your own reflectors, again using white painted cardboard.