No 1600x900 resolution option in Linux Mint 13 Maya 64-bit w/ MATE

May I suggest you give Bumblebee a try (http://bumblebee-project.org/install.html#Ubuntu)? Before installing it, you must uninstall your current Nvidia drivers. Please read this answer for instructions on how to do this and for more info:
graphics - Is a NVIDIA GeForce with Optimus Technology supported by Ubuntu? - Ask Ubuntu