How to automatically subtotal data

Question

My spreadsheet has text data in columns A:D.  Data header row is 3.  Numerical values start in column E and may go out 2 months or 36 months. 
I am currently manually formatting the reports.  I provide one report sorted  on Column A (Sales person Name) and another report sorted by column D (Regional Area).  I am sorting the data by column A for report 1 and column D for repot
2.  I then select all the data then  select the columns to subtotal.  Is there a way to do this automatically?
Much thanks for your help.

Answer 1

Have you tried using:-
Data tab
Outline group
Subtotal button
For EXCEL 2010 see here:-
http://office.microsoft.com/en-us/excel-help/insert-subtotals-in-a-list-of-data-in-a-worksheet-HP010342620.aspx?CTT=1
For EXCEL 2007 see here:-
http://office.microsoft.com/en-us/excel-help/insert-subtotals-in-a-list-of-data-in-a-worksheet-HP010079192.aspx?CTT=1
It would also be helpful if you explained what you meant by, "reports" as this word has different connotations in different countries.
How are you sorting the data?:-
Data tab
Sort & Filter group
Sort button? Filter button? Advanced button? Something else?
Have you considered using a Pivot Table?