I'm missing why you can't just leave these devices on Windows 98. It may not be ideal, but it sounds like their LOB devices and they shouldn't be messed with. I've worked in lots of situations whereby the machinery that ran the business worked on some old OS (DOS, Windows 95, 98, etc) and that was that. If you break the widget machine the copany stops making money adn the IT department has no job, so why not just figure out how to support the widget machine as-is until the company needs a new widget machine?