2) download and instal Sandboxie from official site http://www.sandboxie.com/index.php?DownloadSandboxie
2.1 ) if you use steam exit on all worksation
3) Run on first workstation Wolfenstein: The new order them go to Settings > video and set windowed no boarder
4) First player can stay in game. Second do the same thing but before launch Wolfenstein: The new order Run steam by Sandboxie -> login and choice your game
4.1) Or if you hawe that game without steam just run by sandboxie
5) thats all enjoy killing hitler
(remember if you play on sandboxie the game will not save!!)