Downloading Excel sheet with subtotals....

Hi All,

I am doing totals and subtotals in an internal table and downloading this as to an excel sheet to one of the specified path. But I want toatls and subtotals with a '' and '-' option left side on the excel sheet. whenever we click on '' then it has to show all the rows which we we r doing totals and subtotals and if click on '-' then agian has to show totals and subtotals. want help from all of u. will give u reward poins.

Balu.