Is there any way to either con the game into running at a higher res, or getting it to run inside a window?

Whenever I start up MM9 on my machine (Win 11, using dual 4K monitors, NVidia RTX 4070 Ti) it plays merry hell with my screens, resizing and even moving other active windows. There's probably something simple I'm missing, but hey, I'm old and tired and suffering from nostalgia...I remember playing this one, as I had all the others, when it came out.