Grilled Vegetables on Focaccia

3 tablespoons balsamic vinegar or wine vinegar

Fresh oregano

2 ounces fat-free cream cheese

1 teaspoon dried oregano , crushed

1 medium eggplant , cut crosswise into 1/2-inch slices

1 tablespoons olive oil

2 large red and/or orange sweet peppers

1 purchased focaccia (about a 12-inch round)

2 ounces soft goat cheese (chevre)

2 medium zucchini and/or yellow summer squash, halved crosswise and sliced thinly lengthwise