Insert column with auto-fill in protected worksheet

[hel_mui]

Hi all

I found the following VBA script in a forum of inserting row with auto fill formula in protected worksheet, it works perfectly. However, I would need to modify it so to add column as well? Can any expert teach me how to modify the follwoing code so to insert column? I do not know much VBA script, any help would be highly appreciated. Thank you very much in advance.

Sub Button1_Click()
Call InsertRowsAndFillFormulas
End Sub

Sub InsertRowsAndFillFormulas(Optional vRows As Long = 0)
ActiveSheet.Unprotect Password:="1234"
Dim x As Long
ActiveCell.EntireRow.Select 'So you do not have to preselect entire row
If vRows = 0 Then
vRows = Application.InputBox(prompt:= _
"How many rows would you like to insert?", Title:="Insert Rows", _
Default:=1, Type:=1) 'Default for 1 row, type 1 is number
If vRows = False Then Exit Sub
End If
'if you just want to add cells and not entire rows
'then delete ".EntireRow" in the following line
'rev. 2001-01-17 Gary L. Brown, programming, Grouped sheets
Dim sht As Worksheet, shts() As String, i As Long
ReDim shts(1 To Worksheets.Application.ActiveWorkbook. _
Windows(1).SelectedSheets.Count)
i = 0
For Each sht In _
Application.ActiveWorkbook.Windows(1).SelectedSheets
Sheets(sht.Name).Select
i = i + 1
shts(i) = sht.Name
x = Sheets(sht.Name).UsedRange.Rows.Count 'lastcell fixup
Selection.Resize(rowsize:=2).Rows(2).EntireRow. _
Resize(rowsize:=vRows).Insert Shift:=xlDown
Selection.AutoFill Selection.Resize( _
rowsize:=vRows + 1), xlFillDefault
On Error Resume Next 'to handle no constants in range -- John McKee 2000/02/01
' to remove the non-formulas -- 1998/03/11 Bill Manville
Selection.Offset(1).Resize(vRows).EntireRow. _
SpecialCells(xlConstants).ClearContents
Next sht
Worksheets(shts).Select
ActiveSheet.Protect Password:="1234"
End Sub