Desproteger hojas y libros en Excel 2003 (y anteriores)

Con esta simple macro es posible desproteger hojas o incluso libros en Excel 2003 (y anteriores), mediante la llamada al procedimiento correspondiente.-

Attribute VB_Name = "DesprotegerXLS"
Sub DesprotegerHoja()
If MsgBox("Realmente desea desproteger la hoja actual?", vbCritical + vbYesNo + vbDefaultButton2, "DesprotegerHoja") = vbYes Then
Dim i As Integer, j As Integer, k As Integer
Dim l As Integer, m As Integer, n As Integer

On Error Resume Next
For i = 65 To 66
For j = 65 To 66
For k = 65 To 66
For l = 65 To 66
For m = 65 To 66
For i1 = 65 To 66
For i2 = 65 To 66
For i3 = 65 To 66
For i4 = 65 To 66
For i5 = 65 To 66
For i6 = 65 To 66
For n = 32 To 126

ActiveSheet.Unprotect Chr(i) & Chr(j) & Chr(k) & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)

If ActiveSheet.ProtectContents = False Then
'MsgBox "La clave es: " & Chr(i) & Chr(j) & Chr(k) & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
MsgBox "La hoja está ahora desprotegida", vbInformation + vbOKOnly, "DesprotegerHoja"
Exit Sub
End If
Next
Next
Next
Next
Next
Next
Next
Next
Next
Next
Next
Next
End If
End Sub

Sub DesprotegerLibro()
If MsgBox("Realmente desea desproteger el libro actual?", vbCritical + vbYesNo + vbDefaultButton2, "DesprotegerLibro") = vbYes Then
Dim i As Integer, j As Integer, k As Integer
Dim l As Integer, m As Integer, n As Integer

On Error Resume Next
For i = 65 To 66
For j = 65 To 66
For k = 65 To 66
For l = 65 To 66
For m = 65 To 66
For i1 = 65 To 66
For i2 = 65 To 66
For i3 = 65 To 66
For i4 = 65 To 66
For i5 = 65 To 66
For i6 = 65 To 66
For n = 32 To 126

ActiveWorkbook.Unprotect Chr(i) & Chr(j) & Chr(k) & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)

If ActiveWorkbook.ProtectStructure = False And ActiveWorkbook.ProtectWindows = False Then
'MsgBox "La clave es: " & Chr(i) & Chr(j) & Chr(k) & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
MsgBox "El libro está ahora desprotegido", vbInformation + vbOKOnly, "DesprotegerLibro"
Exit Sub
End If
Next
Next
Next
Next
Next
Next
Next
Next
Next
Next
Next
Next
End If
End Sub