Displays the File Open box with VBA

Sub TestIt()
NewFN = Application.GetOpenFilename(FileFilter:="Excel Files (*.xls), *.xls", Title:="Please select a file")
If NewFN = False Then
' They pressed Cancel
MsgBox "Stopping because you did not select a file"
Exit Sub
Else
Workbooks.Open Filename:=NewFN
End If
End Sub