I'm attempting to replace the battery in an iMac G5 (with iSight). I found some instructions on Apple's website for replacing the battery in an iMac G5 (no isight I'm guessing) The instructions seemed simple enough, removed the screws from the bottom, lift away the back cover, revealing all and easy access to the battery. However, when I try this.. and try to lift away the back cover.. the whole thing comes out.. basically simply removing the 'front cover' I'm wondering if this is a change from the original iMac and the iMac with iSight ? Kansast