How to enlarge Tiberian Sun

[LivesParkk]

I managed to finally get the entire game to display without any parts cut off, but in order to do so i have to render it at 1920x1080 (The resolution of my monitor). This makes the game extremely small (so small that my dad finds it too hard to see). I tried setting the render to another 16x9 resolution (1280x720, 1600x900) but those resolutions still cut off vital parts of the screen (like the money at the top). I have attached my current settings to this post. Anyone know how I can render the game so that it is bigger, without cutting off the edges of the screen ( I can post a picture of what i mean by it being cut off if you need).