i just bought a pair of rather expensive headphones, but i am dissapointed with the internal sound thats on the motherboard of my 15inch powerbook. i am looking for some type of sound card that goes in to my pc slot like this one...http://www.directron.com/audigy2zsnb.html.........however, i called creative labs, and they said its not mac compatible, but that they have had customers that have been able to get it to work...does anyone know any way to do this or a comporable product that is mac compatible? thanks a ton.....ANY help is greatly appreciated, and i desperately need to get one.