United States-based on-line brokerage TD Waterhouse plans to start a Hong Kong stock-trading operation early next month. The company had tentatively set November 8 as the start-up day, TD Waterhouse (Hong Kong) managing director Caren Buck said. The firm would add Internet and wireless trading early next year, she said. The company received approval to buy a stock exchange seat in August. Meanwhile, Charles Schwab, the world's largest on-line brokerage, said its SAR operations had received approval for a stock exchange seat earlier this month. 'We plan to launch trading in the first half of next year,' Josephine Lam of Charles Schwab (HK) said. 'Since real-time on-line trading is impossible until the launch of the exchange's AMS/3 system next year, we plan to launch local trading to coincide with it,' she said. Brokers now type in Internet orders into the exchange's trading system as it allows access only to members. BROKING