Combine tomatoes, zucchini, corn, avacado and green onions in large bowl. Combine remaining ingredients; mix well. Pour over vegetable mixture; mix gently. Chill 3-4 hours, occasionally stirring gently. Stir gently and serve chilled or at room temperature with additional Pace Picante Sauce. Makes about 4 cups salad. NOTE: One cup cooked fresh corn kernels or one can (8.75 oz) whole kernel corn, drained, may be substituted for frozen corn.