Try it with your current monitor. You can't set a resolution per se, but perhaps you can make it so the control panel will restrict the viewport, and pad the rest with black borders.
Though if you just full screened a picture in Picasa or something, it would automatically pad it with black borders accordingly. Maybe you can configure it so the bottom of the picture is always on the bottom.
Though if you just full screened a picture in Picasa or something, it would automatically pad it with black borders accordingly. Maybe you can configure it so the bottom of the picture is always on the bottom.