How do I put it to 1080 resolution
I have this same TV and a PS3. You either need to get a HDMI - DVI cable, or plug in some component cables in order to get 1080i from your PS3. Your DVD's will upscale to 1080i and your Blue_Rays will run at 1080i, but be aware, if you play PS3 games that only read 720p on the back of the game box, the PS3 will down convert them to 480p instead of upconverting them to 1080i.
Peace, Bob
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