i think....
In first 100 years of game it will be no problem with modem,if there are no more than 3 players and the other players got higher than modem.We are playing at time a 4 player game.isdn64k,cable,modem56k and isdn128k and 100 years there are perhaps 10 crashes.But in 1600 one guy was kicked to desktop,sometimes all 5 minutes we must reload the game,and thats of course no fun.Hosting with a modem would be unpossible,perhaps a 2 player game you can host,but later in the game it will crash too.So if all got cable or higher and a 4-5 player game,there wouldnt be much troubles.
Wilhelm