Hello people. - I was just wondering, can anybody give me just a qucik step-by-step tutorial on how to make a clean install of Lion, when it gets released? I have a harddrive, to back everything up before I start. I know that there is a "upgrade" installation and a "clean" installation. I bascially wan't my computer totally clean with Lion on it. So how do I do that? And what do I need to buy? (which version of the cd or someting)Btw, I have snow leopard installed on it. - Thanks.