I tried set up POL on few machines with UNIX, and RC5 runs on Gentoo only! It's really bad, because Gentoo isn't used on servers.
But today my friend found a solution. Every version of POL (for Windows) runs pretty well on wine. It's probably only way to run it on most of UNIXs.
Running 97 RC5 on UNIX - solution
Moderator: POL Developer
Re: Running 97 RC5 on UNIX - solution
It may be too late for you, but FYI I am running the latest core (compiled Sept 01 2008) on Debian Lenny.