I think this has been discussed in the past, either here on the in the Yahoo Group, mainly around using Cyberboard. I've been experimenting with using a program called Battle Chronicler (also mentioned here before) for battle reports. But has anyone tried using it for a PBEM game? On the face of it, it looks like it would work well, aside from dice rolling which you'd either need to do on trust, or use an online dice log.