I've been wondering about this for a while, but never remembered to ask. How do 4:3 Sony Wega HD sets handle HD signals? Do they display full height and chop off the sides, or do they squeeze to display full resolution, or do they scale down to fit the resolution of the screen? In other words, are Sony Wega HD sets truly HD sets (able to display a full-res HD picture) or are they just capable of displaying a picture from an HD signal? And by the way, what is the full resolution on these things? 480p? 1080i?