Hi, I installed windows xp on parallels 4.0 (that I just bought days ago) and I have no sound. I tried using the system->device manager and left clicking for "scan for hardware changes" or whatever. I do have a yellow question mark called "multimedia audio controller" but it can't find a driver for it and the "scan for.." doesn't do any good either. I also tried installing drivers through "Add Hardware", no good. In control panel -> sounds and audio devices, it says "no audio device". I would really love some help. btw, in the parallels menu - I tried setting the sound to "Null" (it said that it helped in some forums) - again, doesn't help.