BeOS floppy based? The versions I've seen had larger requirements than floppies and 4MB RAM. The mention of ConcurrentDOS and Concurrent CP/M bring to mind a switch we made 13-14 years ago with a trouble-call tracking system we were running. It was based on a CP/M machine with 8" floppies and a hard disk, though I no longer recall who made it. Anyway, the database was quickly outgrowing the capacity of this system so it was contracted out to come up with something else. What happened was that we installed network cards in our Zenith 248's and connected them toa server that was based on a multiuser variant of DOS...if I recall correctly, it was called MOS. The thing crashed at every little thing and the bugs never were worked out of it while I worked there. Jeff -- Collector of Classic Microcomputers and Video Game Systems: Home of the TRS-80 Model 2000 FAQ File http://www.geocities.com/siliconvalley/lakes/6757