big spoiler alert!!!!!!!!!!!
search for a room with 3 pentagrams on the floor. Each orb goes on a pentagram. Take the orb, release it on the middle of the pentagram and should go up and give a sound. If you've done all three, an arc should appear. And that should do it. If you need more help, just ask <img src="/ubbthreads/images/graemlins/wave.gif" alt="" />
btw: welcome to the forum <img src="/ubbthreads/images/graemlins/wave.gif" alt="" />
