How do I create a window from another window on the fly.

Here is what I have in my class, I can reference the WebDesktop, but it is not working.  It doesn't error out... just no window shows up.

MainDesktopManager = amaPage.Session("MainDesktopManager")
Dim isWindow As ISNet.WebUI.WebDesktop.WebDesktopWindow
Dim aFound As Boolean = False
For Each isWindow In MainDesktopManager.Windows
If isWindow.Name = ssName Then
aFound = True
Exit For
End If
Next

If aFound = False Then

isWindow = New ISNet.WebUI.WebDesktop.WebDesktopWindow
isWindow.Text = ssCaption
isWindow.Name = ssName
isWindow.ControlBox = ControlBox.Yes
isWindow.ControlBoxImage = ssControlBoxImage
isWindow.ContentMode = ContentMode.UseIFrame
isWindow.ContentURL = ssURL
isWindow.ShowInTaskBar = True
Dim vSize As System.Drawing.Size = New System.Drawing.Size(640, 480)
isWindow.MinimumSize = vSize
Dim isSize As System.Drawing.Size = New System.Drawing.Size(ssWidth, ssHeight)
isWindow.Size = isSize
If ssAllowMaximize = True Then

isWindow.AllowMaximize = AllowMaximize.Yes

Else

isWindow.AllowMaximize = AllowMaximize.No

End If
If ssAllowMinimize = True Then

isWindow.AllowMinimize = AllowMinimize.Yes

Else

isWindow.AllowMinimize = AllowMinimize.No

End If
If ssAllowResize = True Then

isWindow.AllowResize = AllowResize.Yes

Else

isWindow.AllowResize = AllowResize.No

End If
If ssAllowClose = True Then

isWindow.AllowClose = CloseMode.Yes

Else

isWindow.AllowClose = CloseMode.No

End If
isWindow.ClientVisible = True
MainDesktopManager.Windows.Add(isWindow)

Else
End If

End Sub