> I'd like to know if there is a command line option to set the windows version It is possible to set it from command line (for example, "winetricks winxp" or "winetricks win98"), but it is better to install each program in its own Wine prefix (for example, "~/wine/mygame" or "~/wine/microsoft-office"). Reasons are obvious: you can uninstall a program by deleting its prefix, you can apply application-specific workarounds without affecting other programs, and everything will work more reliably this way.