Don't try to run the game through TriDef. Just open it up and enable the stereoscopic option. The monitor should recognise this and put it in 3D mode (you may need to restart the game once, I forget). If this isn't the case then enable the stereoscopic 3D mode in the game and then manually put the monitor into Frame Sequential 3D mode. This title works fine on the AMD 6950 I tested so I don't see why it wouldn't work on your 5870. Which GPU? Is this over DisplayPort? The firmware is for the 'SA' series monitors. As usual Samsung aren't very helpful or communicative on that one but it isn't specific to the SA750/SA950 series at all. The (slightly) older SA350 and SA550 series had some real issues running via HDMI on Nvidia GPUs and this could have been something that the firmware was intended to fix.