I just bought my first iMac and absolutly loving it, i just had one quick question, in my old windows computer (which has now been turned into a HTPC) i had 3 SATAII hard drives 320GB, 400GB and 500 GB, now the case of the HTPC only allows for one HD so im left with a spare 320GB and 400GB hard-drive. I was just wondering what is the best way to attach those two drives in one enclosure to the iMac?