Just for me - excel macro to generate an XML

If you are here for a sharepoint tip, disregard this post- I am posting this to myself so I will not lose this code. Basically, it is an excel macro that genenrates an xml file from the current sheet. If you do want to use it, add a reference to microsoft xml in the VBA environment, and paste the code below to a module.
There are many way to improve it, but I just wrote this to quickly achieve a small task that I needed done.

Sub makeXml()
    ActiveCell.SpecialCells(xlLastCell).Select
    Dim lastRow, lastCol As Long
    lastRow = ActiveCell.Row
    lastCol = ActiveCell.Column
    
    Dim iRow, iCol As Long
    
    Dim xDoc As New DOMDocument
    Dim rootNode As IXMLDOMNode
    Set rootNode = xDoc.createElement("Root")
    Dim rowNode As IXMLDOMNode
    Dim colNode As IXMLDOMNode
    
    'loop over the rows
    For iRow = 2 To lastRow
        Set rowNode = xDoc.createElement("Row")
        'loop over the columns
        For iCol = 1 To lastCol
            If (Len(ActiveSheet.Cells(1, iCol).Text) > 0) Then
                Set colNode = xDoc.createElement(GetXmlSafeColumnName(ActiveSheet.Cells(1, iCol).Text))
                
                colNode.Text = ActiveSheet.Cells(iRow, iCol).Text
                rowNode.appendChild colNode
            End If
        Next iCol
        rootNode.appendChild rowNode
    Next iRow
    xDoc.appendChild rootNode
    xDoc.Save ("c:\temp\temp.xml")
    set xDoc = Nothing
    
End Sub
Function GetXmlSafeColumnName(name As String)
    Dim ret As String
    ret = name
    ret = Replace(ret, " ", "_")
    ret = Replace(ret, ".", "")
    ret = Replace(ret, ",", "")
    ret = Replace(ret, "&", "")
    ret = Replace(ret, "!", "")
    ret = Replace(ret, "@", "")
    ret = Replace(ret, "$", "")
    ret = Replace(ret, "#", "")
    ret = Replace(ret, "%", "")
    ret = Replace(ret, "^", "")
    ret = Replace(ret, "*", "")
    ret = Replace(ret, "(", "")
    ret = Replace(ret, ")", "")
    ret = Replace(ret, "-", "")
    ret = Replace(ret, "+", "")
    
    GetXmlSafeColumnName = ret
End Function