Hi, I've been running windows Xp for 3 years on my iMAc (OSX v10.4). Its an early 2006 machine. I've upgraded to windows 7 and do not have any sound. I no longer have the bootcamp (beta) drivers CD. Apple no longer support this. Also i do not seem to have any Mac OS CD. I have hard that some drivers are on the lepoard CD, but i do not have this. Where can i get the relevent drivers from (preferrably for free)? Thanks for your help.