Just want some tips on the best way to go about doing a clean install of 10.6.2. If I have 1TB External running Time Machine every hour etc is that a good back up for when I want to transfer stuff back onto the new OS once upgraded? And if I want to do that how about do I do that? Or should I back up the stuff manually first and transfer it back? I need a little help and I don't want to mess it up and lose any of my current Apps etc I have already.