Replacing the CD Burner in a SONY VAIO PCV-RX450

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I want to replace the CD Burner in my SONY VAIO PCV-RX450 with a DVD Burner. I don't think this should be rocket science, except for one problem. SONY explains how to remove the left side of the computer case (viewed from the front), but does not give any information on removing the right side of the case. I need to remove both sides to have access to the mounting screws for the CD Burner and to install the DVD Burner. Does anybody know how to get into this unit?