Has anyone figured out how to open the newer WD Mybook cases. I picked one up at Best Buy. I paid $130 for a 500 GB. I want to put that drive in my Mac, then put a smaller drive in the Mybook. The case appears solid. I Googled on how to open the case, they are referring to an older Mybook that has a screw that you take open and then pop open the case. The new cases do not appear to have that screw. Any ideas?