I recently gutted an old Dell that didn't work, once there was adequate amounts of space I fixed a halogen light to the top and put the newly germinated seeds inside after I planted them in small Starbucks cups. I'm using the stock fan in the PC to circulate air through the grow room. It keeps the inside relatively warm so my plants have been doing so well. One is beginning to vegetate and I plan on transplanting them outside after sufficient vegetation is noticeable among all the plants. I'll pot pics later. It's not much of a long term grow room, but I can grow them to sufficient maturity for vegetation to occur. This is my first grow.