Sky was installed today. I have a widescreen panasonic TV, and a Thomson digibox. I'd like to know which setting is the best to get normal sized (ie non stretched) pictures. I've found that if I change the setting to 16:9, then widescreen signals are detected and my TV adjusts itself to show them properly. If it's on 4:3 this doesn't happen. If I have a widescreen, should I be using the 16:9 mode and leaving my tv on auto-adjust mode? What settings should I use to get a normal sized picture?