Too late. I fried at least my motherboard this morning. The plug for the Arctic Acellero Xtreme III connecting from the fan to the motherboard is three pins: yellow, black and red. Based on the above picture above I lined up the plug on the two male pins of the 6850 so the female yellow pin was hanging off to the right. The red and black female pins were in place.
However, there is also a plug from the power supply, which splits into 7V or 12V male sockets, that have to plug into the power cord mentioned above. The plug connecting to either the 7V or 12V socket has 4 female pins in order of black, red, yellow, blue. Since the 12/7V sockets only have 2 male pins I chose the 12V and there was only 1 way to fit the female plug into the socket so I attached it.
Put everything back together, powered up my machine, and there was a bright light emenating from (what appeared to be) the video card, a fizzing noise like small current sparkling, and the odor of something burning. I powered off the computer, reversed the power plug on the video card's end and powered everything back on. No video.
Took out the 6850, rebooted and tried the onboard video card - no video. Put in the nVidia card I was using while getting the fan attached to the 6850 - no video. Also, I noticed there was no power being delivered to the hard drive. I came home from work today and powered on the machine again using the onboard video - nothing, and the fan over the CPU is "twitching". Guess the mobo is fried, and potentially the 6850 and PSU. Hopefully I can get some decent replacements.