Thanks! I found 2 "My Book AV" units at the Best Buy by Surrey Centre Mall on King George Blvd. Left the DCX-3400 on, connected the My Book to it by the provided eSATA cable, turned on the power to the My Book, and saw the screen message re formatting. Less than 15 seconds later it was done and functioning as a drive. All my existing recordings were still accessible. Couldn't have been simpler.