Processing Multiple Files

Maybe:

Private Sub cmd_browseConfig_Click()     ' code which choose config file
strchosenfile = Application.GetOpenFilename()
TextBox1.Value = strchosenfile
End Sub

Private Sub Cmd_browseFolder_Click()  ' code which opens the Folder to be selected by user
Dim FName As String
FName = BrowseFolder(Caption:="Select A Folder")
If FName = vbNullString Then
    Debug.Print "No Folder Selected"
Else
    Debug.Print "Selected Folder: " & FName
End If

TextBox2.Value = FolderPart(FName)      ' The FolderPath
strInputFile = TextBox2.Value 
End Sub

Function FolderPart(sPath As String) As String
  FolderPart = Left(sPath, InStrRev(sPath, "\"))
End Function

Sub Process()
' c00 = "E:\OF\"                     ' change the foldername if necessary ; always ending with \
' c01 = Dir(c00 & "*.xls")     ' change the extension if necessary
 
 Do Until c01 = ""
  With GetObject(c00 & c01)
    '  change something
      CreateWaferMap
   .Close True
  End With
  c01 = Dir
 Loop
End Sub