what O.S. do you run?
is the software available to buy on its own?
at least now you can get all those components at a decent price.
imagine the cost of a system like this 9 years ago. i don't think they even had a cpu capable of that speed back then.
i notice that you have used the AMD cpu in the picture.
i like where the small fan is mounted, sucks all the heat from the ram and cpu out.
plus the vent on the lid allows air flow past the vga card when installed.
and the fan on the power supply will suck out any heat that is trapped under the lid.
just a friendly observation.
my only concern is lack of air flow past the harddrive. (i assume the harddrive is mounted under the cd rom)
i am not trying to be a smart ass or to knock your design (please dont take any offence as i know you have worked hard on this)
just some input for you on this great design.
the hard drives in my pc get quite hot if the fan in front of them is not turned on ( i have 2 x 750 gig seagate hard drives in a raid striped configuration giving me 1.5 Terabytes).
it might pay to have an extra vent punched out under the dvd rom drive.
once again well done.