Switch Desktops using a Batch file

[rotation]

On my Lenovo X200 I have the Thinkvantage button.
This Button is not recognized by Dexpot, so I cannot create a Hotkey.
But I can execute a command in a Batch file using another Program.
How can I switch Desktops using a Batch?

e.g. "c:\Program Files\Dexpot.exe switch"

[Patrick]

[FAQ] Which command line options are available?