How can can I adjust the program below to:
Sheets("Sheet1").Select
cell = Columns("A:A").Select

'***PROGRAM START*******
Sub ChangeFromUpperToLowerCase()
Dim cell As Range
For Each cell In ActiveSheet.UsedRange
If Not cell.HasFormula Then
cell.Value = LCase(cell.Value)
End If
Next cell
End Sub
'***PROGRAM END*******

Thanks in advance.
Maperralia