Currently Being ModeratedNov 11, 2012 12:04 PM (in response to HannahC97)
To have EVERYTHING as it is Now...
Copy your ENTIRE iTunes FOLDER to an External Drive... and then... after the Upgrade...
move it back to your Computer..
Full Details Here > http://support.apple.com/kb/HT1751
An Added Bonus is that you will have a Backup of iTunes.