It is possible to split files into 1440k sized parts on one computer, transfer them with a floppy, and catenate them back together on the linux machine with the "cat" command. Like so:
cat part1 part2 part3 ... partN > whole_file
Getting the cdrom working would be easier of course. I don't use Fedora, but maybe posting the /etc/fstab file would help. In the mean time, have you tried opening a terminal, typing "su" and then root password, and then "mount /mnt/cdrom" (substitute "/mnt/cdrom" for whatever your mountpoint is called, you can see in the /mnt directory or in the /etc/fstab file).
Hope that helps.