I assume you mean you have multiple fields on a detail section and you want to suppress the detail row if all the fields on it are NULL or 0.00.
Just parenth the formula you ahave now and add an AND then add your next field conditions...It will be like this (red ink indicates new sections of the suppression formula):
(isnull({Sp_Optional_New_OutstandingMIS_BIllWise_newformat_27032009;1.Serv Chrgs - HO})
or ({Sp_Optional_New_OutstandingMIS_BIllWise_newformat_27032009;1.Serv Chrgs - HO}) = 0.00 )
AND
(isnull({table.nextfield}) or {table.nextfield}=0)
AND
(isnull({table.thirdfield}) or {table.thirdfield}=0)