I can only tell you how mine looks and how a normal CD-burner is set up as don't have a DVD-burner.
Your drive isn't listed in the list of compatible hardware at
http://www.linux-mandrake.com/en/hardware.php3 but that doesn't mean it won't work. If you get it working report it there.
So, this is in my fstab:
/dev/ide/host0/bus1/target0/lun0/cd /mnt/cdrom auto ro,noauto,user,exec 0 0
/dev/scsi/host0/bus0/target0/lun0/cd /mnt/cdrecorder auto ro,noauto,user,exec 0 0
And this is what my lilo.conf looks like:
image=/boot/vmlinuz-2.4.21-0.13mdk
label="old_linux"
root=/dev/hda6
initrd=/boot/initrd-2.4.21-0.13mdk.img
append="quiet devfs=mount hdd=ide-scsi acpi=off"
vga=788
read-only
append has to have "hdd=ide-scsi"(probably hdc if it's you're only cd drive) for it to be recognized as a burner. Like I said above this was all done for me.