Hello, people.

I'm trying to get the Russian game "Beregis Avtomobilya" to work with DOSBox. So far I've solved the my first issues with the game (installing it, settig up sound) but I still can't get the game to show in full scrfeen. All I get is this:

So far I've found two different screens that seem like options, but can't find the exact option to resize the screen. Can anyone help me with that, please?