If the program was written to run under DOS 3.3, it probably won't work
under ProDOS. You can use the System Utilities Disk 3.1 to copy the
information over to a 3.5-inch disk (the DOS to ProDOS conversion is
handled automatically during the copy). However, if the application
interacts with the operating system giving DOS 3.3 commands, it won't run.
We recommend that you ask the software developer if they have a ProDOS
version.