This week's Ghetto Gourmet events are sold out, but you underground diners shouldn't fret. Instead, put on your most convincing eighth-century Baghdad caliph outfits and cop an invite to one of the "Arabian Nights" meals that'll be held in a Williamsburg loft on Friday and Saturday. The events are the latest dinner-and-dancing bashes inspired by hip historical scenes (fin de siècle Parisian parlors, twenties high-society New York) and thrown every few months by the founders of the Dinner Club: Hairdresser and antiques aficionado "Miss Amy" Burgess and chef "Miss Julia" Jaksic of Employees Only (and now the Beatrice). Previous events have featured Chinese wedding beds, chandeliers, even acrobats and swing bands, hence the $85 ticket price. This one promises to be just as lavish.