It's just one DVI cable, it looks like a regular DVI cable but it won't work with a non 120hz monitor. So in essence it's two DVI cables in one. And yep, plug it in, if you have the latest drivers installed then just go to the Nvidia control panel and set it up from there. Do you have Nvidia 3D vision?
Cool, this monitor as far as I am aware isn't 3d vision compatable it used tridef instead with polarised glasses as opposed to shutters, However I assume setup is just as straightforward