SOAK dried porcini mushrooms in lukewarm water for 20 minutes. Remove from water, rinse and slightly chop, set aside.
COMBINE white wine, tomatoes, porcini mushrooms, and oregano in a saute pan over medium heat. Bring sauce to a boil and season with salt and pepper to taste. Lower heat and allow to simmer for 15 minutes.
HEAT olive oil in a separate large saute pan over medium-high heat. Cook rib eye steaks 4 minutes on each side. Add garlic and onions to saute pan and cook for 2 minutes.
PLACE onions on bottom of a large serving platter. Place steaks on top of onions. Pour mushrooms and tomato mixture over steaks. Garnish with chopped parsley and serve immediately.