Rogue Trader/Dark Heresy Resources

Here's a pretty good fan-created unofficial site for players of the WH40K Dark Heresy and Rogue Trader RPGs:

There's plenty of stuff there and, of course, you can use the Dark Heresy stuff in the Rogue Trader game and vice versa.

I also found a Rogue Trader character generator here: http://cbpye.net/rtchargen.php. It's very good and makes life a lot easier, especially if you're looking for an original NPC.