Until 2003, Fujifilm was shipping their line of Frontier digital laser imagers with NT 4.0 SP5 as the underlying OS. So wherever you see a Fuji printer (in most Walgreens actually), there's an NT 4.0 install with no compelling reason to migrate. The system is turnkey, with no easy (for your average photo lab tech) way into the underlying OS...it boots up and comes online. Simple as that. If it doesn't, there's a ghost CD that the tech can use. Now they ship their new Frontiers with either Windows 2000 or XP Pro.