So i am trying to upgrade from Linux Mint 14, to Linux Mint 15, by following these steps.
sudo sed -i 's/quantal/raring/' /etc/apt/sources.list
sudo sed -i 's/nadia/olivia/' /etc/apt/sources.list
sudo apt-get update && sudo apt-get dist-upgrade
sudo apt-get upgrade
sudo shutdown -r now
As for when it asks me if i want new configuration files, i will press Y. I will let you all know how my upgrade process went. Ive never had any luck going from one version of mint to the next, without having to re-format.