This is a very short and simple window mod i wanted to do to my Corsair 600t. I bought some u-channel from mnpctech (Thanks Bill for your product!), and some standard acrylic from Lowes.
http://imgur.com/a/DxaSf
(P.S. If anyone can tell me how to do the normal images, send me a message.)
It wouldn't be hard to design a desk similar to it, or how you exactly want it, and build it out of materials from lowes. You would save a lot of money.