Would probably be easier to use liveslak or the Slackware install ISO, chroot into the installation and install elilo that way. Should be this simple:
Code:
mount /dev/your_root_partition /mnt
mount --rbind /dev /mnt/dev
mount --rbind /sys /mnt/sys
mount --rbind /proc /mnt/proc
chroot /mnt
And then run pkgtool, go to Setup, and re-run the elilo script.