3    Guajillo Chiles
1 tb Brown Sugar; Firmly Packed
1/4 ts Salt
2 lb Beef Flank Steak
2    Cloves Garlic;Finely Chopped
1 ts Thyme Leaves; Dried
1/4 ts Pepper; Freshly Ground

Place chiles and enough water to cover the chiles in a 2-quart saucepan.
Heat to boiling. Boil, uncovered, for 5 minutes and then drain. Remove
stems and finely chop the chiles. Mix chiles and remaining ingredients
except the steak. Rub mixture on both sides of the steak. Cover and
refrigerate for an hour. Set oven control to broil. Place beef on rack
in the broiler pan. Broil with tops about 3 inches from the heat until
brown, about 5 minutes. Turn beef and broil until medium-rare about 4 to
6 minutes longer. Cut beef, diagonally across the grain, into very thin
slices.