WEll, the wife insisted I leave it be, and sleep on the problems of where everything plugged in. I did the first power on last night, but without success, as I had missed on of the main motherboard power plugs. The CPU fan came to life, as did the DVD - the HDD's were so darn quiet I could not hear if they were live or not. The screen remained off, but I realised later that the CPU power was not on..
This case has so many fans, I just don't know what to do with them - I have adapters that use the old style HDD/OD power plugs, that then feed off into 2x5v fan plugs and 2 x 12v fan plugs. I am now looking to see if my fans should be running at 5v or 12v...
So far so good - might even get the O/S loaded today!