If you have not already install vbox then i would suggest installation of the current version directly from virtualbox repository by following their easy to follow steps.
https://www.virtualbox.org/wiki/Linux_Downloads
They have not added the quantal repository on that page but it exists so use quantal as your platform name in the source url.
As far the screen resolution, USB access and other useful stuff you shall also manually download the guest extenssion pack from
https://www.virtualbox.org/wiki/Downloads
and install it through vbox preference settings.
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