Preheat oven to 325 degrees. Score top of ham in a diamond pattern, making cuts about 1-inch apart and place ham in a baking dish or roaster.
Pour 1/2 cup vinegar over top of ham and place in oven. Bake for 1 hour, then pour additional 1/2 cup Vinegar over ham. Continue to pour additional vinegar over ham at 1-hour intervals until ham has baked a total of 4 hours.
Meanwhile, pour pineapple juice into a small saucepan. Heat until it begins to simmer, then add 1/2 to 3/4 cup brown sugar. Remove from heat and stir until sugar is dissolved and well blended.
Remove ham from oven after baking 4 hours and pack brown sugar into the opened scored cuts on top of ham.
TO DECORATE HAM: Place 1 clove at each corner of scored cuts on top of ham. Place pineapple slices to cover entire top and add 1 cherry to the center of each pineapple slice. You may need toothpicks to hold pineapple in place.
Baste top of ham with heated juice mixture and return ham to oven. Raise oven temperature to 350 degrees.
Baste ham at 30-minute inter.·als for the next I 1/2 hours. With a baster, remove and discard the liquid from bottom of baking dish as it accumulates.
Let ham set for 30 minutes before carving. Remove pineapple slices and cherries and place on a serving platter as decoration around slices of ham. Enjoy!