Ok, so I got a second gtx 285, and, at first, I installed it with a tri-SLI bridge. I went into the Nvidia control panel and enabled SLI, and it worked.
Imageshack - slisettings.png
But, when playing bad company 2, my computer would eventually freeze up, and I'd have to restart. And I'm not sure whether it happened after the first, second, or third time (I think third because all of a sudden I got a little slowdown) and it crashed. When I turned the comp back on, I noticed fans going a lot harder, and SLI was no longer available.
Imageshack - slisettings2.png
I took out the tri-SLI bridge and just put in the regular 2-way bridge, and it started working again. Then, today, after I quit playing call of duty, my wireless internet cut out. I restarted, and once again, SLI was no longer there, and my computer started acting like it didn't even have a wireless card as there was no wireless option to enable/disable in the "change adapter settings/network connections" tab of the network and sharing center. Also the fan was going hard again.
Any ideas? And on a side note, in the first image, I have physX set to recommended which appears to be using my second 285, should I set that to cpu for max performance? Is that making my second card dedicated physX? That's not what I want, but, it's not the problem right now because my system isn't even picking up SLI.