The state's new concealed weapons law means brisk business for instructors in firearms handling. The courses that run from 100 dollars to 300 dollars are mandatory for most permit-to-carry applicants. The law -- which takes effect tomorrow -- requires those who apply for permits to show proof they have had 12 hours of safety training, including two hours of shooting practice, within the last three years. Of the 100-thousand people expected to apply within the next six months, 80 percent to 90 percent will need to take the classes. Kim Norris -- a spokeswoman for Ohio Attorney General Jim Petro -- says his office bases the number on the experiences of states that have recently adopted similar laws. The applicants also must pay a 45-dollar fee to Ohio's county sheriffs to get the permits.