So I finally got around to trying out wargameroom last night. For those who don't know it is a set of java programs that let you play some chosen wargames (mostly CDGs) online. But it's not VASSAL or CB, since it is in realtime but specifically it enforces all the rules.
I played Twilight Struggle, and it's actually pretty great and I will be playing more often. Only a few of the implementations have full graphics (TS being one of them) but the whole process is very smooth. What is really nice is that since the program enforces rules these CDGs go really quickly. So our game of TS lasted like 1 and 1/2 hours or so for an almost full 9 turn game. And that was with me reading a lot of text and dallying about--my opponent used like 30 minutes and I used an hour of time. I highly recommend checking it out.
Needless to say, I got crushed in 9 turns as the Soviets. I didn't feel too bad, though, the guy I was playing said he had played ~150 games of TS in the last two years on wargameroom.