Dave,

You could run a macro, below. Change the path to where you have the files stored. With Excel 2007,
you have a few options - I'm showing how to save files that may have macros or other code...

HTH,
Bernie Deitrick
MS Excel MVP

Sub TrandformAllXLSFilesToXLSM()

Dim myPath As String

myPath = "C:\Excel\"
WorkFile = Dir(myPath & "*.xls")

Do While WorkFile < ""
If Right(WorkFile, 4) < "xlsm" Then
Workbooks.Open FileName:=myPath & WorkFile
ActiveWorkbook.SaveAs FileName:= _
myPath & WorkFile & "m", FileFormat:= _
xlOpenXMLWorkbookMacroEnabled, CreateBackup:=False
ActiveWorkbook.Close
End If
WorkFile = Dir()
Loop
End Sub

"Dave Nuttall" wrote in message
...
I have a lot to do, so it would be nice to batch them up!