Been a while since I looked at FC1, but I think you need the 1.4MB images here
. You may only need the first two unless your doing a network install or need access to a pcmcia device.
The same files listed in the link above should be found on your first CD under images
Do a dd if=bootdisk.img of=/dev/fd0 bs=512
from Linux or use the rawrite.exe
in the dosutils
directory under Windows to make your diskettes.