click on the CDO icon in dev/drivers drawer
from the pulldown menu click information
this will open up the cdo icon
in the tool type where it says DEVICE=squirrelscsi.device
UNIT=0 change this UNIT=2 OR 3
SAVE and exit
click again on the CD0 from the pulldown menu
click rename change this to CD2 OR CD3
this corrosponds to your scsi device unit No 2 or 3
then double click your new CD2 OR CD3 icon to mount it
reboot with your scsi cd switched ON