I don't know the terms necessary to ask this in a concise way, so I'll just spell out what I mean: Is there any way of getting my monitor, when running a full-screen game at a resolution other than the monitor's native resolution, to display it at that resolution (with black bars/border filling the rest of the screen) rather than stretching it to fill the screen? My monitor is a Samsung 2233RZ, if that's relevant.

(I say 'getting my monitor' to do this, but for all I know the stretching might happen before anything gets sent to the monitor.)