I was given a My Book World Edition II, 2TB- 1to1 mirrored one for Christmas. I wanted an external HD for back up of our computer. Computer is a iMac 2.66GHz, Intel Core2Duo, 4GB, 1067MHz, DDR3, using OS X 10.6.5, 2.92GB free memory, and 5.88GB free space on Disc. We have an Airport Extreme and a Magic mouse. Will this work with Time Machine, and auto backup things? I am assuming I have to use the installation CD that comes with unit to get full function, is that correct? I am not really computer savvy, and any and all help would be greatly appreciated. HAPPY NEW YEAR, to all.