SJ3 on 64-bit operating systems
Let's face it, SJ3 is ancient 16-bit software, which does not function directly on 64-bit operating systems such as Windows 7 64-bit. Porting SJ3 to a new platform is not an option, but fortunately SJ3 does work fine on 64-bit systems using DOS emulators such as DOSBox.
Running SJ3 with DOSBox
Dosbox is a free DOS emulator which can be used to run old programs. Use DOSBox to run SJ3 by following these instructions:
That's it. Use Alt-Enter to change the game to full screen.
To automate the DOSBox & SJ3 start-up, you can add the above lines 4-6 (the mount command, the c:-command and the SJ3-command) to the end of your dosbox.conf file (Start Menu->DOSBox->Options->DOSBox vx.xx Options) after the [autoexec] section.
DOSBox works on other operating systems other than Windows, so you might be able to run SJ3 using DOSBox on them as well.
I will try to make a single installer for the SJ3 & DOSBox combination. This installer will be added here as soon as it's available.