Here is a small macro. It scans down column A, looking for the word "subtotal"
When it finds the word, it inserts a blank row just below:
Sub lineAdd()
n = Cells(Rows.Count, 1).End(xlUp).Row
Dim radd As Range
Set radd = Nothing
For i = 1 To n
v = Cells(i, 1).Value
If InStr(UCase(v), "SUBTOTAL") <> 0 Then
If radd Is Nothing Then
Set radd = Cells(i, 1)
Else
Set radd = Union(radd, Cells(i, 1))
End If
End If
Next
radd.Offset(1, 0).EntireRow.Insert
End Sub
Macros are very easy to install and use:
1. ALT-F11 brings up the VBE window
2. ALT-I
ALT-M opens a fresh module
3. paste the stuff in and close the VBE window
If you save the workbook, the macro will be saved with it.
To use the macro from the normal Excel window:
1. ALT-F8
2. Select the macro
3. Touch Run
To remove the macro:
1. bring up the VBE window as above
2. clear the code out
3. close the VBE window
To learn more about macros in general, see:
http://www.mvps.org/dmcritchie/excel/getstarted.htm