Professional tax payment.

Hi ... this is Kavita

My husband is in transportation business. We provide our own t-permit vehicles on lease for schools, call centres or for outdoor trips. He is suppose to pay professional tax for the year 2008-09. urgently he has to send 1000/- paid challan copy to RTO. Please can anybody explain me the slabs? does he require to apply for PT no? from which site can i get PT challan?