, as root, add append="hdx=ide-scsi"
then run /sbin/lilo
Replace the x in hdx with the letter that corresponds to your cdwriter.
You will also need to add a line to /etc/fstab
something like /dev/cdwriter /mnt/cdwriter iso9660 noauto,owner,ro 0 0
Next mkdir /mnt/cdwriter
then ln -s /dev/hdx /dev/cdwriter
Replace the x with the proper letter for your new cdwriter and you can name it whatever you want(you don't have to call it /dev/cdwriter)