Ok, back to your questions,
@loafers
It would take a bit too long to explain it all but I can give you a watered down version.
Equipment used:
1x Computer PSU
3 diy heat sensitive drivers running at 9.6v 750mA, heatsink and fan cooled
9x 440nm 3w 1A LED's
4x fans for circulation (2 intake, 2...