Just installed Ubuntu 12.10 on virtualbox for fun. As I am new to this operating system, I don't know much about it. Trying to change the resolution on display settings, but the max resolution for the choice it can choose is 1024 x 768. I want the resolution atleast 720p (1280 x 720). I already put the maximum amount of graphics memory allowed on virtualbox (128MB), and enabled 3D acceleration. What I can do to make the resolution bigger? Thanks guys.