I'm on a 56k, which runs at about the speed of a 26k modem...
However, I can play Tribes 2 with FULL graphics settings on the highest resolution, highest everything, all in a game with 40
people with little to no lag, while getting 35-40 fps. I attribute this fact to the great netcode that T2 has.
But when I played JK, I could barely play a 4 person game without moving in slow motion.
I really, really hope Raven uses just as good of a netcode, or better then what Tribes 2 has, and that would make me one happy gamer