\nYou no longer have to plunk down hundreds of dollars to buy (or rent) a season of \"Star Trek.\" CBS wants to give away classic programming on its website.\n\nThe network is now offering full-length episodes from the first three seasons of \"Trek,\" the first two for \"The Twilight Zone,\" and the freshman seasons of \"MacGyver,\" \"Hawaii Five-O\" and \"Melrose Place.\"\n\nEach of the episodes are streaming for free; you'll just have to sit through a few ads, of course. \n\nThe TV Squad says that more will be added in the upcoming months. \n\nNBC just announced its offering of old shows, such as \"The A-Team,\" \"Emergency,\" \"Night Gallery,\" \"The Alfred Hitchcock Hour,\" \"Miami Vice,\" the original \"Battlestar Galactica\" and \"Buck Rogers\" on its website. -- Rachel Cericola\n