This is my first time doing so, I am in dire need of an upgrade from my 160 gb to a 320 gb hdd. My question is, I already backed up my computer using time machine, now what? I have a PC friend who is going to help with the physical installation of the new hdd, but I have no clue what to do after that. A friend told me I would have to reinstall my OS disk, but how do I get my files from time machine back onto the computer? Unfortunately my files are pretty disorganized. Any advice would be greatly appreciated!