Matrix Talk:Module-hda-intel

I have this on my Acer Aspire 8730G computer :

            description: Audio device
            product: 82801I (ICH9 Family) HD Audio Controller
            vendor: Intel Corporation
            physical id: 1b
            bus info: pci@0000:00:1b.0
            version: 03
            width: 64 bits
            clock: 33MHz
            capabilities: pm msi pciexpress bus_master cap_list
            configuration: driver=HDA Intel latency=0 module=snd_hda_intel

There is no sound... Help ! :o)

Trouble with driver update

When I try to configure the driver installation, I get the message that the kernel sources are needed, but the instructions say I don't need to re-build the kernel. What gives?

I'm trying to upgrade my Alsa version (Ubuntu) in order to get access to my internal microphone. I have an HP mini 110 running Ubuntu 8.04, Alsa 1.0.16

Please help.

Update: I followed the ALSA instructions (http://www.alsa-project.org/main/index.php/Matrix:Module-hda-intel) and that completed with no errors. However, I still seem to be running 1.0.16:

cat /proc/asound/version

Advanced Linux Sound Architecture Driver Version 1.0.16. Compiled on May 3 2009 for kernel 2.6.24-22-lpia (SMP).

Can anyone suggest how to get 1.0.21 working?