Can I buy somewhere a "superdrive" and install it in one of the two bays of my Dual 867 ? I have the Pioneer A04 (I had it before I purchased this PM) and I had install it in the upper bay but a part from huge headache just to fit it in (I had to remove parts of the case in front...) it makes my Mac completely unstable (it crashes when waking up from sleep). Now that I have removed the computer works w/o any troubles, but I would still like to have a superdrive. Any ideas ?