Double, double toil and trouble it's time for the Montana Shakespeare in the Schools presentation of Shakespeare's Macbeth. There is a madrigal dinner prior to the performance so be on the lookout for damn spots on your blouse. Frenchtown High School. Dinner at 6 PM, play at 8 PM. $10 for each, $20 for both. Funds raised benefit the Frenchtown High arts programs. Call Ann for tickets at 626-2730.