Vista and video overlay

[Six666]

Windows Vista Ultimate 32
ATI Radeon X1900

ATI Catalyst 7.3 Control Centre settings:
main display cloned with digital panel
Clone mode shows overlay in theatre mode (full screen)

BS.Player 2.16 settings:
Video Rendering - internal renderer overlay (default) mode 1
filter managment:
enable - "allow intermediate filters"
disable- "enable advanced graph building"

K-Lite Codecs 2.87

I can watch videos in windowed mode and in full screen , but not on overlay (on TV). TV shows my desktop and BSPlayer window.
The same hardware and software works perfect with Win XP SP2.
What's wrong? Video drivers, BS.Player settings, codecs?
Any suggestions?