While these will typically run on older versions of Windows, to the best of my knowledge they will not run directly on Windows Vista or Windows 7.
One simple way of getting the programs to run on more recent versions of Windows is to download a piece of software called DOSBox, a DOS emulator. I currently use DOSBox 0.74.
Create a folder called, say, dosprogs, on the main c: drive of your computer.
Instead of trying to run my programs directly, first save the ones you wish to run to that folder.
Then open DOSBox, and at the Z:\> prompt, type
mount c c:\dosprogs\
and press Return.
At the Z:\> prompt, type c: and press Return.
At the C:\> prompt, type dir and press Return to see what programs are there, ready to run.
At the C:\> prompt, type the name of the program you want to run (omitting the exe extension), and press Return.
The program should then run, as intended, in a little window.
To increase the speed at which the program runs, while it is running, hold down Ctrl and repeatedly press F12. The cpu speed is shown at the top of the little window, and in my experience (on a 2010 laptop) this needs to be at least 100,000 and possibly 200,000 for the program to run at the kinds of speeds I originally intended.