Dim xlx As Object, xlw As Object, xls As Object
Set xlx = CreateObject("Excel.Application")
xlx.Visible = True
Set xlw = xlx.Workbooks.Open("C:\Filename.xls"), , True
Set xls = xlw.Worksheets.Add
xls.Name = "NameForNewWorksheet"
Set xls = Nothing
xlw.Close
Set xlw = Nothing
xlx.Quit
Set xlx = Nothing