http://teamfu.freeshell.org/replayer/pokerstars.html
That converts 90% of the tournament histories from PokerStars into a replayer compatible format. I've also got a contributor on my forum that has written a program to parse together multiple PS histories into one history that the converter and replayer support as well. This could probably be useful for the kotz tournaments you guys hold.
I should probably publicize this converter a bit more, but I got a project in the works that will make this redundant soon.