Sometimes you Don't Need a Variable

If you're going to use an object and get rid of it after a few lines, you don't need to declare a variable to it. Just use With. Here is an example:

With CreateObject("Scripting.FileSystemObject")
    FullPath = .BuildPath(Path, FileName)

    If Not .FileExists(FullPath) Then
        Rem Do something...
    End If
End With