When try to search with KDE Help am told nothing found and did I run htdig and when do (and, yes, did create search index) am told: unable to open/create document database '/var/lib/htdig/db/db.docdb '; so tried running htdig -at but did no good.
This adds to frustration of being unable to access any of my files on floppies since KDiskFree frozen and " mount -t vfat /dev/fd0 /media/floppy or /media/floppy0 or /dev/floppy or /mnt/floppy " all give message: "mount point doesn't exist". Tried updating KDE to KDE: KDE4: STABLE but did no good. Anybody have a clue as to what is going on and some possible fix?

Did you create any of those mount points before you tried the mount command?
Eg
Welcome to LQ!

Thanks Eg for advice, got floppy mounted, but still can't get it to open the file; when I put floppy icon onto Desktop and clicked it, got this message: Error-KDesktop: The desktop entry file /home/wiliam/Desktop/Floppy Device is a type FSDevice but has no Dev=...entry.
Where and what should the entry be?

I'm not sure how you "put floppy icon onto Desktop"

I don't know
But I'll make a guess here: R-Click the floppy icon on your desktop. Properties tab. Click the down-arrow for "device". Choose something suitable like /dev/fd0

I no longer use floppies, but I do use USB sticks. When I plug them in they just appear on my destop. I use them and then R-click and choose "Unmount". Works like a charm. But I am using a moderately old, but fully supported and reliably stable distro [ http://www.kubuntu.org/download.php#lts ]

Are you still using KDE4 ? I am sticking with KDE3 (again, for stability: I value function over form).

If the floppy has been mounted you should be able to access the files by navigating to its mountpoint, ( /mnt/floppy in the example I gave you above) with your filemanager.

Don't forget to unmount it before you eject it.