Hey guys, I'm going out this week to buy Snow Leopard and I've never in my life upgraded an operating system before because usually by the time a new OS comes out I need a new computer anyway. However, that was when I was a Windows user. Now, I'm using a Macbook Pro that I've had since December of 2006 and it's still running like a champ, but I would like to have all the latest features that come with Snow Leopard. My questions are as follows: Is there anything special I need to do prior to installing the new OS? Should I do a clean install? If so, are there any special files I should back up outside of my iTunes and iPhoto libraries, and my documents? Is there anything else I should take into consideration? Any feedback is greatly appreciated. Thank you.