hehehe, not that I care, as I don't need the Big Picture thing, as I can just hookup my pc to my tv, but I get
"steam big picture is not supported on your platform"
What platforms does Steam Big Picture mode support?
The Big Picture beta update is currently available on any PC running Windows Vista, 7 or 8. Hardware requirements for the beta can be found here. Mac OS X support for Big Picture mode is coming soon.