1. Heat gas grill to high or prepare charcoal grill with hot coals or heat broiler.Rub:
2. In bowl, stir ginger, garlic, sugar, soy sauce and pepper to form a paste. Rub 1 tablespoon onto one side of steak. Grill, rub side down, 5 to 6 minutes. Rub remaining paste onto top of steak; flip. Grill 5 to 6 minutes or until temperature measures 140 degrees F for medium rare. Remove from grill; let stand 10 minutes. (Or coat broiler pan with cooking spray; place steak, rub side up. Broil, 4 inches from heat, 6 minutes. Flip; rub remaining paste onto steak; broil 6 minutes more.)Dressing and salad:
3. In medium-size bowl, combine lime juice, cilantro, soy sauce, sugar, garlic and pepper. Whisk in oil until blended. Peel cucumber; slice lengthwise in half, then cut into 1/4-inch-thick slices. Trim and discard 1/4 inch off stem end of bok choy. Cut remaining bok choy crosswise into 1/2-inch strips. Tear Boston lettuce into bite-size pieces.
4. Toss cucumber, bok choy, lettuce and onion with 3/4 cup salad dressing. Thinly slice steak on the diagonal against the grain. Place about 2-1/2 cups salad onto each plate; top with 4 thin slices of steak. Drizzle about 1 tablespoon dressing on top of meat. Makes 6 servings.