Help with installing

[Veilrap]

Okay I haven't built a computer in a couple years, but I'm all set up now except for hooking in the PSU.

My PSU is an Olympia 650W
My Motherboard is a Gigabyte P35-DS3R

Here's the problem: I've plugged in the large motherboard cable (the one that's been around forever with a ton of pins) But it seems that there is also now an additional mother board PSU hookup called ATX_12V in the manual. The problem is none of the connectors from the PSU match it. It's a 4 pin configuration labeled (GND, GND, +12V, +12V) in the manual.

On the PSU there are 2x3s 2x4s and the 1x4s.

Any help would be great!

 

[Veilrap]

Ok I feel stupid now, one of the 8pin connectors can split. DOH.

I'm correct in assuming this is the correct connector?

Also, my video card (8800 gts) requires some power. Now it came with an adaptor that goes from it's 6pin connector to two 4 pin connectors. Should I use this adapter or should I use the 6pin connector from my PSU?