http://bugs.winehq.org/show_bug.cgi?id=31374
--- Comment #40 from RealGecko alexandrbezenkov@gmail.com 2012-10-22 04:44:25 CDT --- (In reply to comment #38)
sorr y, but where is the command line?
Run Konsole if you use KDE or gnome-terminal if you use Gnome, there is also lxterminal under LXDE. Navigate to directory containing Steam.exe and run command mentioned above.