I just installed Windows XP using Boot Camp and everything went smoothly. No install problems nothing. Inserted the Leopard disk, installed the Boot Camp drivers and everything seemed to work as well. When I try to change the sound level using the F3 / F4 / F5 keys though, the little bubble thing appears in the center of the screen but nothing happens. I can't hear anything out of the built in speakers or when I install headphones. Also, when I go to control panel and click sounds or audio devices it says "No audio device detected". I have tried re-installing the Boot Camp drivers multiple times with no success. Any help would be greatly appreciated.