I installed the version on the BeOS pro disk on a Beige Power Mac 7100. If you have any specific questions about it please ask. The version I remember required the drive to be partitioned and a Mac OS 8 or 9 on the drive because you couldn't boot directly into BEOS or boot the machine. This had to do with lack of open firmware. Several things were missing when I got it installed, although it peformed better than MacOS on the machine and multi-tasked well some things were missing like the Real Player version that was included with the Intel version. My impressions was that I would probably go back to the last 4.x version if I had to run BeOS on the PowerPC. Version 5 Pro was never fully developed on PowerPC and the 5 distribution has a few problems. I would suggest that you'd find more applications and binaries for the PowerPC if you go with a 4.x version of BeOS..
That's my experience from a few years back. You might talk to the folks over on BeBits.com about their experiences and check out their binaries for it..
