I had exactly the same problem. When I checked the cd using Windows it
read the directory but not the readme(s) down one or two levels. I then
downloaded the iso file once again from another mirror (can't remember
which one) and burned another cd. This one was readable with Windows and
installed Linux successfully.
Did I need to download again? Who knows, but it is strange that we
independently had the same symptoms. Was it the iso file or a bad burn?
You tell me, all I know that it finally worked.
Harvey