I installed Mint 13 Cinnamon on my Vostro this past week while still keeping the dual boot of Windows 7 intact. I first used Clonezilla to make an image of my entire laptop with Mint 12 and Windows 7 and then booted into the Mint 13 USB thumb drive I created using the Universal USB Installer and the Mint 13 .iso I downloaded. From within the Live Mint 13 boot I used GParted to delete the Mint 12 partition and proceeded to install Mint 13 alongside Windows 7. A very simple install.
So far everything on my Vostro has worked right out of the box. Nothing to configure or tweak. I haven’t decided yet if I am going to also install Mint 13 on my Dell XPS 410 desktop since I not long ago installed Mint 12. I believe I just may skip Mint 13 and wait until Mint 14 is released to install on my desktop.