Here are the pictures (sorry about the size of the photo's I'm using my web cam and it's a old one.)of the ATX Mid tower pc case I just finished and am using now along with my other one.
I used the front covers from the CD and Floppy drives for more realism.
I have a 120mm and a 90mm fan for exhaust in the back. I wired a plug to the old power supplies plug and switch wires so it uses the computer power cord and switch. And I have a pc surge protector strip plugged into it that powers the two other power strips and the 1 amp ac power supply for the fans
I can also move the lights around to adjust for plant height or to side light the plants. And even add more lights if desired.
I put a 60mm fan at the intake to assist air flow. And as you can see I'm using three 26w/100w CFL's. I've got plants in it already and it works good. I thought about all of the good ideas I've seen folks using here and figured I'd use some of them in this case. So I really have everybody here to thank for sharing their case pictures.