Well if you have the CD it is a lot eaiser.
Basically you can play either TCI/IP, PBEM, or PBW.
TCI/IP = Direct PC to PC game.
PBEM = Play By EMail. A great way to play. You set up the game and email turns back and forth.
PBW = Play By Web.
www.pbw.cc One of the best ways to play. Turns can be automated so all you have to do is start a game, set it up, upload the game file and your off. The turn will automatically process after the Last player uploads and all you will have to do from that point is download your turn and play it. Then upload of course which is easy enough to do.