want to play offline a bit against computer AI
Just wondering. It doesn't mention anything about that in the manual, so I'd have to guess no. But I thought I'd ask.
May I also suggest that, when you start a game that you want to be single player, you go to the advanced server setup dialog, and turn off "Advertise on the Internet" and "Advertise on the LAN." This will prevent your game from being visible to other players, and will prevent spectators from joining. This will save you some bandwidth, and can save you some synchro errors.
xander