Substitute for Vermouth in Cooking?

What would you use to substitute for vermouth in a recipe? I found this recipe: a href="http://food.yahoo.com/recipes/allrecipes/57609/slow-cooker-rosemary-and-red-pepper-chicken"http://food.yahoo.com/recipes/allrecipes…/a which is a rosemary & pepper chicken in the slow cooker. It calls for vermouth but I don't have any and am not sure the store nearby sells it.