Sub Open_My_Files()
Dim MyFile As String
MyPath = "M:\Access Files\"
MyFile = Dir(MyPath)
Do While MyFile <> ""
If MyFile Like "*.xls" Then
Workbooks.Open MyPath & MyFile
Sheets(1).Select 'Add code here to rename each sheet, you can record a macro to give you the code then add it here.
Range("C3") = 6 'Alter the cell id to change the format, again you can record a macro to do this and copy the code here.
ActiveWorkbook.Close True
End If
MyFile = Dir
Loop
End Sub