I was just wondering what type of Internal Hard Drive I need for the MacPro. I'm planning using it for a Photoshop scratch disk, but I'm not if I need a certain type or not. I found this one - SAMSUNG HD160JJ 160GB 3.5" SATA II INTERNAL HARD DISK DRIVE (http://www.pcworld.co.uk:80/martprd...ProductList&category_oid=-31455&show_all=true) Is this suitable? If not what do I need? Thanks in advanced for your help.