DOS only for VPL-1 software executable files,
I've tried both VPL-1, CE5 and CE7, just for kicks on a ME, 98 and XP machine with no luck.
Only my old 486DX with true DOS works for any of my FTL-1011 and 2011's from the original VPL-1 disk.
There is a newer windows version called VX-VPL-1 that includes both DOS and windows software but it requires a different programming cable than the older DOS cable and it only works with windows on the VX and some of the VXA series radios.
Check out RFWIZ as I remember they have both versions for sale along with a windows only program cable.
Mike