PC-DOS comes with GHOST, but is fairly a fairly old IBM product and may not
work on some modern PCs.
MS-DOS is a newer Microsoft product (not new, just newer than PC-DOS). It
has a better chance of working on modern PCs.
If you can not get GHOST to work from a bootdisk made with the PC-DOS
option, then you should try an the MS-DOS option. However, you will need to
provide a copy of MS-DOS. The easiest way to do this is to make a bootable
(DOS) floppy from within your version of windows. Even XP can do this. The
particular flavor of DOS that will result if you make a bootable floppy from
within XP is actually a variation of windows ME. If that does not work with
GHOST, get a win98SE floppy and try that. Images of win98 floppies are
available at
www.bootdisk.com.