Sound lost completely [resend]

[Mike Yates]

Hi
I've not had any microphone input at all since using this Asus 
M4A78-HTPC motherboard with its Azalia RS780 audio.
The mic input works fine in Windoze and in some (32bit) Cd-boot Linux's.
Oddly, it does not in "Asus Expressgate" (instant-on) Skype and
I have not received any response in the Asus groups about that.

In making a fresh attempt to install the provided Asus drivers for Linux,
(via-linux-audiopackV1.9RC3 made 29/12/2008).
I have lost all sound modules and I get

root at myates:~# modprobe snd
FATAL: Module snd not found.
FATAL: Error running install command for snd
root at myates:~#

I have booted onto the Ubuntu 9.04 AMD64 CD,
though I'm now on 9.10, finding that the sound output works fine
and there are dozens of snd modules in lsmod.

What's the best way to retore the "standard" sound setup?

-- 
Mike Yates           Frome   Somerset   England