ME ME ME ME ME I HELP I HELP!!!
I've made 3 already and here's the one I have pictures of...
I can help you layout the parts in my CAD program. PM me to get started. A Do-It-Yourself Clear case only costs $60 including all the hardware you need to put it together (depending on size and configuration). It's also going to take you a week or so to construct the thing and the tools required are...
Table Saw
Drill press (or power drill, a drill press is simply a more precise tool)
Sand paper
Dremel (if you want to make a clear I/O backing plate)
you'll also need a motherboard tray or a crappy case to scalp one from. I have a spare but it's only Micro-ATX in size.
I don't recommend attempting to heat-warp Lexan though. It takes forever and can be very hazardous.
I have a design guide in .DOC format which I could e-mail you, but I'm offering my expertise in designing it as well.