I built this case for my little brother a few years ago when he built his first "real" gaming PC.
The original case, a cheap aluminum mid-tower from Newegg:
Since all of the exterior panels are removable, we were able to get the machine put together, then remove the panels as needed to mod them.
The top vent finished. The fan grille is a plastic unit from Directron, painted blue to match the rest of the case.
The side panel after cutting, adorned with the insignia of the Galactic Empire.
Backed with 1/4" plexiglass and installed on the case.
The lighting is provided by a 12" string of 20 or so LED lights.
AMD Athlon64 3000+
DFI "Lan-Party" nForce4 Ultra
2GB Corsair DDR400
Maxtor 250GB SATAII
Thermaltake 430W PSU