Is there any way to tell if a program is being broadcast in HD. I know a lot of programs in the on-screen HD guide will say HD in the info. But I am watching the San Diego and New England game on the Los Angeles CBS HD channel and it does not say HD in the info. However, it is an excellent picture (much better than the SD CBS channel) and it is full screen on my normal tv setting so I am wondering if it is HD or not. Anyone know?