AFAIK, Conus's WS patch is only meant to run at 1360x768. If your monitor's native resolution is higher, it should just rescale it to fit the entire screen.
Edit: Also, 1440x900 isn't a 16:9 aspect ratio, it's 16x10. You might want to take a look at the original release thread for the mod as there is some discussion there about different ratios/resolutions and the problems that can come up.
http://www.subsim.com/radioroom/show...nus+widescreen