Homemade Salsa on the Fly

3 large ripe tomatoes, or use a 14 1/2 oz can of diced tomatoes 1 small onion, finely chopped 1 small green bell pepper, seeds and veins removed, minced 1/2 cup chopped green chilies, with juice 1 clove garlic, minced 2 tablespoons red wine vinegar 1 tablespoon olive oil salt