Vertical refresh rate under NT

[Przemyslaw Bazarnik <pb at syntekt dot com dot tw>]

Hi all!

Did anyone managed to set the vertical refresh frequency
of the Xserver (DX driver - fullscreen) under Windows NT?

On my NT WSK SP5 the refresh freq. of the screen opened 
has some obscure relation to desktop display mode I cannot figure out.
In any case I could not get it run higher than 75Hz.

It seems to be a pitfall of NT's DirectX 3.0 which does not seem
to allow to pass the refresh rate in IDirectDraw_SetDisplayMode call
used by xf_dx.c   
I see this is possible in DirectX 7 
 (http://msdn.microsoft.com/library/psdk/directx/ddref_1pkn.htm)

I know there is a set of DLLs to hack NT into supporting DX 5
(http://forum.arstechnica.com/forum/ubb/Forum5/HTML/000050.html)
but I'm not sure if this is enough to support refresh argument in Set_DisplayMode.
Any DirectX experts here?

Or is there another way to run a X server with reasonable (controllable) 
refresh freq under NT? (short of running it in a window)

Thanks,
Przemek