Service tax registration

THERE IS A DOUBT I WANT TO CLEAR. 1. THUS I AM A PROPRIETOR AND RESIDENCE OF INDIA 2.I AM RECEIVING A COMMISSION AND BROKERAGE FROM AN FOREIGN COMPANY IN POUNDS DIRECT IN MY CURRENT BANK ACCOUNT 3.AS I AM GETTING COMMISSION FOR GETTING ORDERS WHICH I AM DOING MARKETING SERVICE IN INDIA THUS SERVICE IS DONE IN INDIA BY ME ON BEHALF OF FOREIGN COMPANY AND JUST RIGHT KNOW MY TURNOVER IS CROSSED OVER 11 LACKS AS COMMISSION 4.THUS I AM LIABLE FOR THE SERVICE TAX REGISTRATION AND CHARGING OF SERVICE TAX TO FOREIGN CO. 5.WHAT IS YOUR SERVICE TAX REGISTRATION CHARGES AND RETURN FILING CHARGES WAITING FOR POSITIVE REPLY