Teachers and counselors in the New York City school system begin handing out condoms on demand today. In Baltimore, students in five high school and two middle school clinics can receive condoms and oral contraceptives.The Evening Sun wants to know what you think about the condom giveaway program.Call SUNDIAL, the Baltimore Sun's telephone information system, on a Touch-Tone phone. The call is local, and answers will be registered between 10 a.m. and midnight. The SUNDIAL phone number is 783-1800 or, in Anne Arundel County, 268-7736.