Computer users in Toronto will be able to connect to the Internet from park benches, buses, or almost anywhere downtown later this year under a plan to turn the central city into a wireless fidelity, or Wi-Fi, zone. A city-owned agency, Toronto Hydro Telecom, will install transmitting and receiving units on light standards in a six-square-kilometer central-city hotspot over the next 10 months, making wireless Internet access available to anyone, anywhere within the zone.