Quote:
I have the ability to connect two monitors and make the display span between
them. This feature has NOT been removed from Windows. Open the "Help and
Support" tool and search for "dual monitor", where you will find tons of
information on setting it up and troubleshooting when it doesn't work.
Dual monitor is NOT the same as horizontal span. Quick way to check if its horizontal span like the OP was asking is to maximize a window. If it spans both screens, THATS horizontal span. Dual monitor is just extending your desktop on your second monitor. Maximized windows will still only be on one monitor.
Its been a year since the last post, but we still dont have this feature. I've given up on Vista, as M$ has probably done also and put their effort to Windows 7. Hopefully they include it there.