I'm uploading the GOG version instead since it's probably the only one that'll get patches and the game needs them. The torrent size is a bit bigger but no big deal. Just install this in order.
If you want to play in 16:9 (the game works and looks fine in 16:9) simply disable "Keep Aspect Ratio" in the Settings.
If you already played this game and want to keep your saves then in the installation folder there should be a folder 'data' and inside it another folder 'saves', copy the contents to the new 'data\save' folder in this installation.
If you like the game, buy it on GOG or Steam, support future releases.