Thanks Lucas, Roxanne and Jim,

Well thanks to your help, DOS now sees the CD-ROM.  Only trouble is when I try
to access it I get;

CDR101: Not ready reading drive L
Abort, Retry, Fail?

At the end of the MS copywrite notice in DOS, it says;

Drive  L: = Driver IDECD001 unit 0

I created a DOSSTART.BAT file as per instructions and didn't use autoexec.bat.

Dosstart.bat  just contains he statement;
C:\Windows\Command\MSCDEX.EXE /L:L /D:IDECD001
Config.sys contains;
Device=Himem.sys
Devicehigh=C:\CPQDOS\CPQIDECD.SYS /D:IDECD001
MSCDEX.EXE, HIMEM.SYS, and CPQIDECD.SYS are all properly located.  What have I
done wrong?  My hair is already thin and I can't afford to lose much more.

TIA,  Art Cassel