A little late to reply but swore that I already did lol. So the rules are kinda like top secret in that you try to roll under a stat (1-100) on a d100. Big difference is that in dark heresy it's pretty easy to die or at least get pretty messed up. It's good fun though.
the campaign on the other hand is my own creation. Other then the things in the campaign, like space marine chapters and what not, everything is kind of my brain child. From the planet to the plot that is unfolding around the players, its all me. We're playing right now but we might take a break between when seth leaves and when you, andy, get back to cburg.