I don’t have the option to directly connect to a second monitor.
Here is what worked for us on my laptop with windows 7. I created a new shortcut for the RDP connection to my computer at work.
In the Shortcut Tab, for “Target” I had:
C:\Windows\System32\mstsc.exe C:\Users\Scott\Desktop\Office Desktop.rdp /span /multimon
For “Start In”, I had: C:\Windows\System32 .
On the Windows 8 laptop, we did the same exact setup. However, we cannot get it to work connect at all using the shortcut. One thing i noticed is that in the RDP connection on the windows 8 machine, both monitors are recognized, because we can move the remote desktop between the monitors. The problem is the Shortcut we setup on the Windows 8 Machine does not work at all. And one the RDP shortcut, the Span feature does not work.
So essentially, we created a shortcut on the Windows 7 machine and told it to “Span” by modifying the “Target” line as indicated above. But this does not work at all for Windows 8.