Okay so i am going to go ahead and do a clean install when installing ML. however this will be my first time doing so and I have a couple of questions. 1. Once i burn ML to a disk and format my hard drive will I have to download all the apps that came with my computer. I have downloaded no additional apps since buying this macbook pro. But will I have to redownload the ones that were already preinstalled on my mbp. 2. are their any additional things that I will have to do after I finish my clean install. the order i will do the clean install will be, 1, make ML disk 2. format and install ML, 3. what do I do about my backup from time machine, will it do all the work for me once I complete my clean install and launch ML for the first time. Or do i have to do anything manually. 4. really all in all I'm looking to see what i will have to manually do to get my computer back up to where it was before the clean install.