Good try! Close, but no cigar - as they say.
Finally managed to get both HDD in the case, both video cards in and connected in SLI, chip and ram mounted, DVD drive clamped and USB/media card plugged.
Pressed "Go". Not a lot.
All the fans that are supposed to whirr, whirred. All the LED's that are supposed to light, lit.
Nuth'n came out of the video cable(s) to the digital monitor(s).
Now, ladies and gentlemen, we move forwards into a new dawn, a new era. (Troubleshooting).
Cabling, by the way, was a dream. 1000w psu had oodles of cables cascading from it - but found only 4pin CPU and millipede pin ATXpower were needed to the mobo, and then one SATA power cable gave volts to the 2 x HDD and the DVD.
3 x USB cables, 1 x 1394 cable, one AC97 (?) audio and one conglomorate of led/pwr/reset wires all fell into place in a ginormous case full of cooling fans. 3 x SATA data leads simply clicked into place. Skts 1 & 2 being the HDD's, Skt 3 being the DVD.
Didn't need PCI Express power leads, didn't need 8 pin CPU power lead, didn't need the 4 pin 12v lead (all tie-wrapped and stowed away.
Didn't really matter what I needed, as it didn't work, lol. Any of you guys live near Orlando?