Preheat grill to high.
Place tied salmon steaks on the alder planks. Cut 1 1/2-inch hole in center of tied steaks. Finely mince fresh dill and mix with cream cheese. Spoon the mixture into the center of steaks. Season with lemon zest, paprika, salt, and cracked black pepper. Place planks on grill until they begin to smoke, reduce heat to medium low and cover grill. Cook slowly for 15 to 20 minutes or until the fish begins to flake easily. Do not overcook. Garnish with lemon wedges and fresh herbs.