Hi,
I found this on Google Groups:
"The error message about the command-line interpreter indicates, that COMMAND.COM is not found at the given location. To override the error message, just type in the path to COMMAND.COM at the prompt. By default (MS-DOS) this is: C:\DOS\COMMAND.COM Load the CONFIG.SYS, which is in the C:\ dir into an editor, search for the entry SHELL= and make sure, that the path to the COMMAND.COM is set up correctly here. Then load the AUTOEXEC.BAT into the editor and search for if there is a line beginning with SET COMSPEC= If so, in this entry you also should find the correct path to COMMAND.COM.
If there is no COMMAND.COM on your HDD, insert the MS-DOS installation disk #1 in your floppy drive and copy COMMAND.COM from here to your HDD (DOS dir). "
Good luck,