Hi Lurkswithin,
Thanks for your suggested alternative source for boot disks.
Unfortunately the results were very similar to previously.
I saved each of the four files to my desktop.
THen I plugged in the extranal discette for the Dell laptop which I'm using for this job.

Then clicked on the file icen for disk 1 to open and run it.

Results after clicking on file icon on dektop and then clicking on "run":
1. Message "Thanks for using AllbootDisks.com" - click OK
2. Mesage "Insert floppy disk to write" - click OK
3. Message "Current image format is not supported by the disk drive" - click OK
4. Message "Do you want to retry" - click OK
5. Previous sequence repeated.

This results sugests there is some issues with my discette drive or the formatting of the floppy disks in it.