Yes, it is fairly straightforward.
1. With IDE Hard drive, install linux on HD.
2. Recompile Kernel with DOC support. Information is available from M-System's web page on how to do this.
3. Retrieve lem image onto hard drive.
4. Reboot with new DOC kernel.
5. Follow lem instructions.
6. Insert the DOC boot image on /dev/fla1 /boot directory and update lilo.conf and fstab appropriately