Hitachi 42PD7200 42 in. HD-Ready Plasma Television "modle picks" Questions

i can't find UHF channle 36 I HAVE A HITACHI {MODLE P42hO1AU} PLASMA TV. I ALSO HAVE A X-BOX. FOR MY X-BOX I BOURGHT A RF ADAPTER. I PUT THE PLUGS IN THE RIGHT PLACES BUT IT DIDN'T WORK. I READ IT ...