I believe the runner has to reach 1st in order for the game to be over, but I am not sure. I don't think there is anyway to get "out" while receiving the walk, so it's quite possible that the game is over as soon as ball 4 is called.
In other news, it looks like the White Sox are heavily scouting the Yankees:
http://www.newsday.com/sports/baseba...-yankees-print
I definately would not want to see them deal any top flight rookies in order to save this year. I'd rather see them play in the FA market next year and suppliment with kiddies.