I really wanted to run something based on FreeBSD...had limited success with PC BSD ...it just gave me fits...with my wide monitor....also helps if one has an nvidia graphic card. ..for all of the Linux Distros....
I’ve got an old Gateway (it’s squeaky clean though, a fastidious friend gave it to me) with the old PC connector for the keyboard (pre PS/2) and related hardware. I d/led everything I could find for WFW 3.1, and burned it onto CD for later. Still want to put the thing on the web over DSL for kicks, but it’ll probably wind up getting Linux’ed. May try that Puppy you linked up there.