Thank you, Pharma.
And it's being reworked as we speak.

Hemo,
You can pick up all the supplies at a combination of stores.
PC case will be at whatever computer shop you go to. If you feel squimish about chopping up a new case, look for a used computer store. You will also be able to find the PC fans at either one of those. If you don't want to use a PC power supply you can use a cell phone charger type of power supply and splice it straight to your fans.

The hardware I used, read the list in my sig PC link, can be found at Home Depot, Lowes, Ace, any hardware shop.

Just FYI, the same work goes into making a "good" pc grow case as a grow cabinet or closet. You'll have to take into consideration the intake air, exhaust air, temp monitoring (get a remote read therm from a pet store), lighting and light proofing. You don't have to use the same number of bulbs I use, you can use less and still get decent results. Some people even use 70 watt HPS and CFL combos. Hell, I think in the future I'm going with my 150 cool tubed HPS, the physical light fixture foot print is the same as the 5 CFLs I have in there, and I know it runs cooler than them with the tube on it.

Just ask when you need help or advise, I've done the reading and figuring so I think I have a decent grasp on this concept.

Good luck.