In a covered bowl or re-sealable plastic bag, combine wine, oil, cumin, salt, garlic and lime juice;
Add julienne strips of meat and marinate 2 to 3 hours. Drain thoroughly. Discard leftover marinade.
Over medium heat, brown meat with peppers and onions in a large skillet.
Warm tortillas on a griddle or wrapped in aluminum foil in a 200 degrees F. oven for 10 min. and serve immediately with meat mixture and toppings on the side.