Sheepish, you're running a dual core processor. In order to fully utilize it, you would have to run two instances. This requires running at least one console version of the program. Follow Stanford's instructions on how to download and configure, but manually bind it to use the second processor core, and you'll be good to go.
There are better descriptions of this configuration in the Software => Distributed Computing forum on this website, or just post back here if you have any questions.
-J