Sure this might be useful to a few of you out there, came across it on another forum (Overclock.net):

I came across a script to quickly switch between SLI and not SLI. I found it here

Here is what you do:

1) Open notepad
2) Copy the following in:

Option Explicit

Dim WshShell
Set WshShell = CreateObject("WScript.Shell")

' Open the SLI Mutil-GPU applet.
WshShell.Run("rundll32.exe nvcpl.dll,LaunchMultiGpuApplet")
' On slower machines this Sleep value may need to be increased.
WScript.Sleep(500)

' Send the keystrokes to change the mode.
WshShell.SendKeys("%E")
WshShell.SendKeys("{ENTER}")
WScript.Sleep(500)
WshShell.SendKeys("{ENTER}")

WScript.Quit(0)

3) Save the file as "SwitchSLI.vbs"
Note: Be sure to change the drop down box from *.txt to All Files.
4) Run.

I do not personally have SLi, but bdattilo does, and he claims it works. You should be able to run it to convert to SLi (this will disable 1 monitor if you dual view). Run it again to disable SLi, and get the second monitor back.

Once again, I did not personally try, but bdattilo says it works


In case you can't be bothered to make the file, or just don't understand - i've included it in the Zip file below.

Hope this helps someone!