Get yourself the CF lights from wallmart, they come in three packs, get also (if you can) a Y adapter for 2 bulbs in 1 socket and a clamp style worklight reflector, I got all three items from wallmart:

3-pack lights CF 3300K (soft white): $9.44+
1 reflector: $7.42+
1 Y-adapter: $0.58 = $17.44 before taxes

I have some pics of how I have been using these lights with good results: the light with 2 bulbs is for the top of the plant,the light with one bulb goes on the side of the plant, and gets moved to a different side every second day