A good cut of meat needs very little in the way of extra flavoring. Look for a thick, well marbled piece. Salt beef a day or two in advance. This will allow the meat to reabsorb its juices before beginning the cooking process. On the day of, re-salt and pepper both sides. Depending on the temperature of your grill, cook each side for approximately 3 to 4 minutes. Place a pad of butter on each steak and let sit under tin foil for several minutes. Slice and serve.