I have two hard drives installed, C drive is my system drive and F drive is to store digital pictures. I also have a DVD read drive and a CD RW drive. I am going to remove both the CD and DVD drives. I am going to install an optical drive that does both. A Plextor PX 712. I am going to install an enclosure in the open slot and install my F drive in it. Then I will be able to remove the F drive and install a new drive in the enclosure and Ghost an image of my C drive to the new HD. I will then remove the new drive and reinstall the F drive. This way if my existing C drive dies I am ready. I would just like to hear from anyone with enclosues who has done this and could give any info on what problems I may run into. Thank you for the help.