My son-in-law has just moved to portugal. TVs & sky etc are on the way. I assume that sky will work OK on his UK TV's but he is considering buying an LCD 17". I told him that I have read somewhere that it is a slightly different system out there & there may be probs with the sound. Does anyone know what the system is and how would the TV's mix & match? I have told him he may need a portugess TV to get loacl TV out there.