Wrote this little diddy to convert an Excel 2003 file to Excel 2010 file. ‘ http://technet.microsoft.com/en-us/library/ff198017.aspx Const xlExcel12 = 50 Set oExcel = CreateObject(“Excel.Application”) ‘ Set below value to false to hide the Excel window oExcel.Visible = True ‘ Convert Set oWorkbook = oExcel.Workbooks.Open(“C:\filename.xls”) Set oWorksheet = oWorkbook.Worksheets(1) oWorkbook.SaveAs “C:\filename.xlsb”, xlExcel12   ‘ End oExcel.quit (oWorkbook.Close) [...]