Off-Topic:
How is it?
Didnt know there is an Campaing Setting for the Black Company...
There was only one book put out and it's a D20 system (nothing real fancy). They tried to include a little bit of just about everything from the books in it. The magic system is a little bit different from stock d20, allowing you to shape and create your own magic. It's pretty interesting, but a little bit different to work with from ordinary DnD.