Service tax

DEAR SIR / MAM , KINDLY ADVICE ON BELOW POINTS ASAP .......................... 1) REQUIRED CASH ENTRY ---- WE PAID CASH TO MR X AGAINST ITS PURCHASING SOME ... 2 ) WHAT IS SERVICE TAX ENTRY ....... 3 ) ITS COMPOLSURY TO PAID SERVICE TAX ON QUARTERLY BASIS .... WHAT IS PENALTY AND DUES DATES ,,,,,,,,,,,,, KINDLY LET ME KNOW IF POSSIBLE ????