Kim's Baked Ham

1 5 lb. canned ham
1 can pineapple rings
1 cup brown sugar
1 cup diet mountain dew

Score and puncture ham several times with a large fork. Place in a roasting pan. Place pineapple rings on top of ham. Mix brown sugar and diet mountain dew together, pour over ham. Cover with foil and bake at 350 degrees for 2 - 2 1/2 hours. Basting occasionally with juices.