Cablevision's Rainbow DBS division launched its "VOOM" service featuring extensive HDTV programming to customers throughout the continental United States. During an initial preview period, as the number of available channels continues to expand, charter customers pay no monthly programming fees through January 2004. VOOM initially features a package of 21 commercial-free, 1080i HDTV channels. VOOM customers will also such cable networks as the Disney Channel, A&E, FX, and AMC, as well as over-the-air digital local broadcast channels delivered...