Ok, so I was going to make this completely custom, but full-time jobs kind of prevent that. So instead, I'll be converting it based on the Dark Heresy tabletop. It uses the same system, and has a similar setting (with a bit more chaos, maybe I'll run one when I'm used to being a GM).
If you can convince me why a certain portion of Dark Heresy should exist in this campaign, I'll include it after some customization. All classes are used, but I'll need to modify the lore on Tech-priests. To straighten things out, Adepts are the Scientist class, and Psykers are the Prophet class. The adepts of Xess are simply a race choice.
Leave comments and questions on what I've come up with. I know I have a lot to iron out.
Here is a link to the rulebook torrent. I tried attaching it, but it was too big for the post to handle.
http://www.mediafire.com/?nxfu1dut1o8d2ok (http://www.mediafire.com/?nxfu1dut1o8d2ok)
If you have it you can try uploading it to sendspace, mediafire, or some other site. The torrent doesn't look like it has any seeders. D:
Yeah same problem I had no seeders, I might be able to find it on a news server.
There, changed the link :) Hope that works