For all the hype about HDTV, there's been a dearth of high-def programming on the dial. This month, however, satellite-TV start-up Voom (voom.com) will begin delivering 39 channels of HDTV (competitors DirecTV and DISH Network have six and seven HD channels, respectively). Voom will
supplement the usual HD fare with 21 exclusive commercial-free channels devoted to music, sports, movies and more.
The service also includes 88 regular channels. Monthly costs are competitive ($40/month), but the setup
is a killer -- $750 for a dish, receiver and