CC included InDesign CS6 which will open Pagemaker 6 and later files.
Don’t even attempt to install InDesign 1.5 on a new computer.
Thanks, Bob. I don't see InDesign CS6 among the choices of programs in Adobe Creative Cloud. Is there somewhere else to look?
From the CC desktop app, choose apps and scroll down. You'll find a drop
down thee that might say all apps or filters and versions. Click on that and
choose previous version.
Thanks so much. I needed the "previous version" clue to move past my road block!!!