Hi yes you are right the sound chip is Conexant but Gateway are being
spectacularly unhelpful in providing any sort of Vista driver for it. It
seems I will have to go to 64-bit Vista as there seems to be some drivers for
that kicking about.
Thanks a lot for your help chaps

"Theo" wrote:

I agree with you, but I'm not sure the OPs laptop has a
Realtek chip. Google search for ATI SB400 AC'97 seem to
indicate the chip is a Conextant(?) sound chip.

John Barnett MVP wrote:
Realtek AC'97 has always installed and worked fine on all of my builds
of Vista.