>I am planning on running a Foxpro 2.6 for DOS EXE on a Pentium II 200+ Mhz box. The EXE reads data from the serial port using a communications library called COMET. This will be for a few months until I can develop a routine in VFP6.
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>Are there any issues running Foxpro Dos in Windows NT? The routine has no user interface, so it doesn't have to look pretty.

No matter if you're using a W9x or NT, you may be in trouble using a modem from a DOS task, IF the modem is strictly a winmodem. I've had a couple of modems which were impossible to use from a DOS task, and they surely froze the complete machine upon attempting to do so. If your serial thing doesn't use a modem, but something else instead... be more specific. As far as I remember COMET, it was modem-oriented.

Another thing - I've tried to run FPD on a NT WS machine, and though it worked fine from the default setting, I needed to set up a DOS codepage 852 and local keyboard layout, so I had to make local autoexec.nt and config.nt. I remember having to do lots of tweaking of memory settings - Watcom extender complained a lot. I've tamed it, finally, but the rest of the machine went to hell - the disk had to be reformatted, and I don't remember what was the winning combination in these .nt files.