How can I install a very old game on Windows 7 64-bit? [closed]

I'm trying to install Theme Hospital on my Windows 7 machine but I'm getting this error:

I've tried setting it to run in XP compatability mode but didn't hold out much hope, and as expected I still got this error.

Is there a way I can force this application to run in 32-bit mode or something?

2 Answers

I would recommend you install a virtual machine of Windows XP

If it's DOS game, try DOSBOX

Long Mode, which is required to run a 64-bit operating system on a x86-class machine, does not support Virtual 8086 Mode, which is required to play old games. Use an emulator or a virtual machine instead.