When you type "mount /mnt/cdrom" in terminal, have you specify /dev/cdrom? or something similar? (depending your cdrom drive)
For example, when you want to mount say your windows drive, you need to specifiy like " mount /dev/hda1 /mnt/cwin " where cwin is just a dummy dir in /mnt
btw, if you want to automount your drives (windows or mandrake), you may want to take a look at the /etc/fstab file
Fedora is great... you'll love it