growing isn't really all that cheap if you want to get the best results possible.. but it is possible to grow one or two plants with some cfl's... you can get these pretty much everywhere nowadays... just make sure that you get the biggest size wattage that you can.... and make sure you don't get confused by the packaging of cfl's.. on the box it sometimes will say 100 watt, but if you read close it will say 100 watt equivelent.. and when you look even closer you will find the actual wattage for the light.. something like 26 watts or so.. get the biggest actual wattage lights you can and the most of them that you can put in the area, a couple of circulating fans, and some seeds and your choice of medium and you should be golden...
there are a ton of threads for peps who grow using only cfl's and i am sure that they are full of good info that you may find helpful along with plenty of peps with the experience of growing with these types of lights that would be more than willing to help you out and answer anymore ?'s that may come up during your grow..
hope this helps you out some..