How do I know which resolution my ps3 is playing a blu-ray disc at on my tv? I have a 1080i Sony hd tv and I need to know how to check and see what my ps3 is playing the blu-ray disc at and how or if i need to change it to 1080i or 720p or does is it already playing it at 1080i or 720p. I hope this makes sense. Please help. Thanks.