beats the hell outa me, but it must be there somewhere. I found this in the HTML manual under 'simultanious games'
quote:
Command Line
As the Host, you can execute the game by running it, and then loading the savegame, and then pressing End Turn. You can also automate the process by using command line options for the game. If you run the program se4.exe you can supply 2 command line parameters. The first is the exact path to the savegame file, the second is the password for the game. If the parameters are valid, the game will execute silently, and when finished will generate a new game file.
you could probably guess based on that info, but some one more informed than me probably has info on specific syntax examples.