To make marinade, combine salad dressing, ketchup, wine, worcestershire sauce, salt and pepper.
Cut steak into 1-1/2 inch cubes.
Put steak cubes and raw shrimp in marinade and let stand in refrigerator 3 hours.
Remove beef and shrimp from marinade; alternate 8 beef cubes and 8 shrimp on 6 skewers, using squares of bacon, slices of pepper and onion and mushrooms between meats.
Place skewers 4 to 6 inches above medium heat on grill.
Cook 8 to 10 minutes on each side, brushing with marinade occasionally.
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