ok, using this image as reference..
the red connector without a black box around it (middle, lower row) is the only card that I am using just the 8-pin connector. The rest of the red pcie connectors are going to cards with 8+6 pin.
Molex connections are coming from middle, furthest right side connection (above #4) and top-left connection (2 above box #3).
The actual molex running to the card adapter are coming from the top-left connection (2 above #3). The middle, furthest right side connection runs the powered risers.
Let me know if that's unclear.. and I hope it helps you avoid the headaches I had!
EDIT - A couple more things.. I am running all x1 risers, except for the first x16 slot, i'm using a x16 riser. All x1 risers are powered, the x16 is not powered. What I refer to as the 'first' x16 is the slot closest to the CPU. All x1 risers are in x1 slots. The only x16 I'm using is that first one, the others are empty.
Also, if you're using BAMT.. gpumon can sometimes take up to a minute to recognize the cards and get going.. it will just show no cards, and the all of a sudden, they kick in and start hashing. I've also had a few times where it will boot up and not show any cards, even after waiting a minute. When that happens, I unplug the power supply cable and let it sit for about a minute, plug it back in and start over.
When it was running 4 cards, it was rock solid. The 5th card and this PSU really cause some strange stuff to happen. It's stable once it's running, but a PITA it get going.
In hindsight, I would've taken my chances with a 1300/1350W PSU like the Rosewill or Antec since they have a single 12V rail. Seems like people have much less trouble with them.
I am only pulling ~1150w at the wall with all 5 cards (0.962v bios / i19 / 1065 / 1175 / lantis' mod'd .bin kernel) and getting stable 650kh's per card.. so power usage is pretty decent with this PSU.