Is there a way to power a second GPU with my PSU?

http://www.newegg.com/Product/Prod [...] 6817341022

That's the PSU, one thing is, it already used up both 6-pin and 6+2 pin to power my GTX 260 core 216...

Is there some sort of converter or adapter to make another different power connection on my PSU feed a second vid card? or do i have to get a new PSU entirely?

i know its 550 watts, but with some wattage calc i used, it says i'm only using 361 watts with my current set up. I figured i can throw in another card, maybe...

(it's a future thing, when i retire that card, i can use it for physics and the new future card for graphics, as my AMD 790GX mobo doesn't do SLI, but it has two x16 PCI slots)

hmm... is there one on newegg, there has to be one

oh, good! perfect...