The controller card (which you need to buy) is what will have the standard monitor adapter (the thing on the back of the computer you plug your monitor into). Then, you'll just run a male/male monitor extension cable between your vid card and your LCD controller.
Finding controller cards is semi-difficult, so good luck on that. Plus, they can be pretty pricey.
Edit: I'm guessing the seller has sold many of those LCDs (they're OEM.. they usually get them in bulk). Perhaps he knows a little something about the screen. Ask him about the controller card necessary to run it.