Eeeeek, let's slow down a little for EndofDivine here.  The only reason I even know about the Hellfire Club is because of the movies, and even I don't know much.  EndofDivine, did you see X-Men: First Class?  Do you know what the Hellfire Club is?  Do you need any explanation about it?  I'll try to explain it, but Batman would probably be best for that.  He's probably got way more knowledge than I do.