That code

'Record the last row number where the Col_A value is not blank
LastRow = Range("A65536").End(xlUp).Row

Loop backwards up the rows, starting with that row, decrementing by 1
For i = LastRow To 2 Step -1

'If the value of the referenced cell in Col_A does not match the cell
above it...
If Range("A" & i).Value < _
Range("A" & i - 1).Value Then

'Insert a row
Range("A" & i).EntireRow.Insert
End If

'Assuming this code is in there somewhere
Next i

Does that help?
***********
Regards,
Ron

XL2002, WinXP


"andresg1975" wrote:

Can someone tell me what is the meaning if this code

LastRow = Range("A65536").End(xlUp).Row
For i = LastRow To 2 Step -1
If Range("A" & i).Value < _
Range("A" & i - 1).Value Then
Range("A" & i).EntireRow.Insert
End If


thanks a lot