Ok, a bit quick on the trigger, figure I can increase my chance of
getting some help if I post what I've tried.

I have the following macro code:

    Private Function GetWindow(ByVal Caption As String) As EnvDTE.Window
        For Index = 1 To DTE.Windows.Count
            Dim result As EnvDTE.Window
            result = DTE.Windows.Item(Index)
            Trace.WriteLine(result.Kind & ": " & result.Caption)
            If result.Kind = "Tool" And
result.Caption.StartsWith(Caption) Then
                Return result
            End If
        Next
        Return Nothing
    End Function

    Private Sub Position(ByVal Caption As String, ByVal x As Integer,
ByVal y As Integer, ByVal w As Integer, ByVal h As Integer)
        Dim window As EnvDTE.Window = GetWindow(Caption)
        window.Left = x
        window.Top = y
        window.Width = w
        window.Height = h
    End Sub
    Public Sub DualMonitor()
        ' Position("Solution Explorer", 1284, 20, 363, 670)
        ' Position("Properties", 1284 + 370, 20, 363, 692)
        Position("Output", 1284, 20 + 692, 1000, 300)
    End Sub

Not very good I'll admit. The solution explorer is docket together with
the server explorer and toolbox, and the 670 there is the height with
the tabs at the bottom, whereas the properties window is by itself so it
has to be set to 692 and not 670.

I'd like to be able to undock and dock the windows together so that I
can make one macro that docks everything into the main window like it
appears by default, and one macro that pulls everything out and groups
the tool windows together the way I want them on a dual-monitor display.

Anyone have any pointers to how I might accomplish the docking bit?