In media center you use the right or left arrows then scroll to the far right (or back one left) to get to an "interactive" option. then OK does the same thing as red or scroll down for the other options - back to get out of it/go back in the menu. I haven't tried this on my 360s but it's pretty painful on the PC, if you have a real freeview tuner you may find it less trouble if you're watching live anyway?