I have a toughbook 30 and I just upgraded to Windows Vista Ultimate 32bit. I downloaded the drivers for the touchscreen and sound for the toughbook for vista and they worked. But I have no audio on the laptop now. Down by the speaker icon in the lower right corner there is an X on the speaker and tells me No audio output device installed. So needless to say this sucks I can't listen to music or anything now. I don't know if it is a hardware problem or a driver problem. But since it worked just fine before I upgraded to vista I assume it is something to do with drivers. And toughbook doesn't have a audio driver for vista on their site.
Thanks again to everyone.