I love the graphics in this game and the GOG version comes with support for modern resolutions but the problem is that it doesn't make the UI any larger so I'd suggest playing at a lower resolution than your native resolution (but still larger than the original). This tends to make the graphics look a bit better at the cost of somewhat smaller text.
For instance this is 1280x720:
- Spoiler:
Of course it fills the screen on my computer so it looks bigger than this but that should give you an idea.
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