how have you got the monitors set up?
dual vision, horizontal desktop or clone?
though to be honest I dont know what you mean by dual monitor function, since I didnt know counterstrike even had multimonitor support
i believe im running a horizontal desktop? basically i got my desktop spanned across two monitors.
i believe counterstrike can be played on dual monitor settings where your crosshair is split between the middle of your dual monitors and you have a wider vision of everything.
i do realize its useless because its so hard to see things when your main focus is split down the middle, but in the future id like to grab a third monitor, basically giving me a real good panned view of everything. as for now, i just wanna try out the dual monitor settings =)
dual vison is where you have 2 desktops that can be different resolutions, however they act as different monitors, rather then having a single span and it being split down the middle. Though the thing with having dual vision is that it will display your games in just your primary monitor, wheter this is a bad thing or not is up to question.
I think that if you want to use the horizontal span to try to play the game you have to change ini files to chane the Field of vision and the resolution yourself. check out www.widescreengamingforum.com, it should have your answer