Mounted the motherboard into the cabinet, against the side panel. Cut out and fitted the custom features bracket for the rear of the motherboard, so that all the motherboard sockets are accessible from the rear (outside) of the cabinet. Fitted the LEDs and power/reset switches.
It runs... but I have to fit the optical and hard drive, cut out and fit the USB/Firewire bracket near the LEDs on the front of the cabinet, make the FIR circuitboard and fit the IR transceiver, try and find a good PCI capture card for PVR functionality and maybe get a DVD writer. And a bigger/quieter hard drive. And get a "passive" transformer PSU (not the unsightly standard ATX PSU I'm using now).
So I'm possibly 20% done now heh!