Win 7 plays no role in multi-monitor setups. That is driver-based. Also, As of the 180.x Nvidia drivers, multi-monitor in SLI support was added. As for a 3rd monitor, you will not be able to do that. A GTX 295 has 2 DVI-out, so you can plug in 2 monitors. The second video card's outputs are turned off in a SLI configuration since the 2nd card is the slave-card. If you want a 3rd monitor, you will need to add another video card.