WINDOWS 98 2ND EDITION

I am using windows 98 2nd edition. My system would not start even with the Start-up disk or the Win 98 2nd edition CD. It give a message the Himem.sys ; DBLBuffer.sys;IFShlp.sys: and Win.com are missing or corrupted .I changed the boot directory to CD when booting from the CD with no effect.

Could you assist.

Many thanks

vicram@tstt.net.tt