I had trouble figuring the whole command prompt at first. Here's what I did: Create a shortcut to the game (right-click > create shortcut).
Now, right click on the shortcut and open the properties menu. In the line where it says "Target," add /11 at the very end of the line. Now it should work. ;)
All brands, logos, and product names are trademarks or registered trademarks of their respective holders.