Using YOUR CHILD’S love of computers to turn them on to classic literature is sneaky but effective. That’s what Southern Star Interactive has done with its Adventures of Tom Sawyer CD-ROM ($34.95; 888-767-8220). It reprints the novel and fleshes it out with evocative historical illustrations, hyperlinks for unfamiliar words and a running commentary by Twain scholar Richard Bucci. The hypertext additions make the American classic seem unstuffy and–is it possible?- kind of cool. Twain, one of the first authors to use a typewriter, would conceivably get a kick out of it.