The most immediate and fundamental difference between Windows 7 and Windows 8 is the main interface. Although the Desktop view is similar to traditional Windows, most of the time you'll be interacting with Windows 8's Metro interface - and boy will you notice the difference. The Metro interface is the default home screen for Windows 8, and features a series of colourful tiles, each offering access to a discrete application. Each offers live information, so you can see how many emails are in your inbox,