NT being NT4 or win2000 is really fussy as it controls devices with and iron fist. I've forced it but it wasn't fun. Your problem with extracting is a local problem unrelated to the emulator. Also forget XP. It runs fine under win9x but make sure the systems is really fast as there will be competeing things going on taking CPU time. The effects of that range from apparent slow access to a lot of IO as retrys due to overruns on the serial lines. Fortunately winders in the win9x range is not a port hog. I havent tried 98ME with this but for a lot of things it's really bad. The BEST as many have said is DOS version 6.22 being a good choice. I keep a 486/66 system running dos 6.22 and Win3.11 so that networking is easy to do but when I need something more or less realtime its available. Allison