Hmmm, isn't 1152*768 a rather uncommon resolution?
However, in my setup my primary screen is 1024x768 and my secondary screen 800x600.
In BSPlayer I have deselected (unchecked) "Use overlay ..."
(In fact for this test the only thing I selected/checked on "Video"-tab is "Use DivX 4 decoder for ...")
In my GeForce 4 MX440 "settings I have deselected (unchecked) "Use Overlay in case of TV-tuner problems" (Free translation from Dutch) Also "Video-mirror settings" (again a free translation for the button which leads you to the Advanced settings page for the nView Clone modus) "Full screen" are switched off.
(Settings of my wife's PC, who has a GeForce2 MX400 like you, are the same).
In Clone mode subtitles are shown both on our primary screen and on TV and subtitles can be placed anywhere we want!
(Both my wife and I are on Windows Me)
Concerning VMR-9 see this post:
http://forum.bsplayer.org/viewtopic.php?p=5396#5396