I'm using Windows 8.1 x64, and I'm trying a legacy app.
I get an error message complaining that the program is not compatible with x64.
Is there a way to force a program to run on 32-bit mode on a 64-bit system?
Here are some screenshots, that might shed a light on what type of program this is:
I run the program pointed to by the arrow, and the message show up one after the other (when clicking OK):

