I'm no expert but I used an IDE Zip drive years ago.
Here are some things that can get you started:
Find out what kernel modules are needed and have them loaded in /etc/modules.conf
Put the filesystem settings into /mnt/fstab
Take a look at
http://www.faqs.org/docs/Linux-mini/ZIP-Drive.html#ss4.4 and
http://www.faqs.org/docs/Linux-mini/ZIP-Drive.html#ss6.4I was able to find the imm module in the VL5.9 kernel source tree
/usr/src/linux-2.6.22.14/drivers/scsi/imm.c
/usr/src/linux-2.6.22.14/drivers/scsi/imm.h
/usr/src/linux-2.6.22.14/drivers/scsi/imm.mod.c