Service tax st3 filing

Hi,

I made a turnover of around 6 lakhs in the last half year i.e Oct -Mar,2012 and earlier got registered with Service Tax department also.

My query is, if I fill up the columns 'Gross amount received' with the respective incomes of the month, then in which column should I fill that the filled amount is exempt as per Notification 8/2008.

Should I have to make the tax columns 'zero' or is there any place to enter that 6 lacs is not taxable.

Thanks in advance.