The situation seems to be this:
I had an original c: drive working with Windows ME.
I installed a new drive that I partitioned and I have been running XP on F: drive. I simply left C: drive there as was.
CCleaner worked fine at finding and removing my cookies on F: until about 6 months ago when it found lots of extra cookies but would not delete them.
Those cookies, I have now found on c:windows\cookies. I simply deleted them from that folder, ran CC and,lo and behold, it could find none to delete.
It would appear that a CC update in the recent past started to look at other drives but, although it finds the cookies there, it does not clean them.
Is this a bug?
Anyway, I am now very happy.
Thank you for your assistance.