'ALEX MACK' GOES ON VIDEO

NEW YORK -- Sony Wonder and Nickelodeon Video, both here, will release the first in a series of "The Secret World of Alex Mack" Jan. 30. From the Nickelodeon television series, the first tape, "In the Nick of Time," will have two episodes, including one that explains how the central character, a 14-year-old girl, came to have superpowers. Suggested retail is $9.98 and the order date is Jan. 4.