BUST

BUST (www.bust.com) This Web extension of the happening grrrl 'zine (available at urban newsstands and, heaven forfend, coming to MTV later this year) advises the surfer to ''slip into your Laura Ashley gauzy nightgown, your spandex pants and rubber bra, or both, or neither'' prior to entering the site. That sums up the entertaining manner in which Bust updates old-guard feminism with witty new-chick pulp fiction. The few articles from the quarterly print edition are heady indeed: a clear-eyed ode to the Hitachi Magic Wand, a guest piece on being bad by Courtney Love (written before she got respectable). But it's online originals like the ''How BAD Are You?'' quiz and chat rooms with actual humor and substance that make clear why you must, you must, you must submit to Bust. A