Do I need a service person to get my cable, DTV looking better . HDTV look great but every thing else looks like crap. Having a problem getting into the service menu. I press the right buttons and nothing happens display,5,vol+,power... I do this and cable tv appears on screen then what do I do? Or did I do something wrong. Can all the topics on clearing up artifacts and detail enhancement make me keep this gwII or do I need to buy another rp? I feel stupid. Help