problem IHC9 alc 888 audio

system config:
intel e6550;
intel g33fb motherboard;
ati 3650 hd graphics card
onboard audio
i am getting very poor sound quality
is there a problem with the driver that
suse choose
how can i uninstall a driver
& also where can i find suitable audio

Aside from a possible manufactuer’s driver (of which there are very few offered for Linux) there are in essence only two possible audio drivers for one’s audio hardware in openSUSE Linux. OSS and Alsa. You can read more here about them:
Sound-concepts - openSUSE

A search on the ALC888 in alsa indicates no updates associated with fixing audio quality:
Search results for ALC888 - AlsaProject

I note you already have a related thread on this. I do not see how an additional thread will help you, and typically multiple threads on the same topic are against forum policy. But I note your title is better in this case (your previous title: "please sombody help me… " was not very good and was unlikely to get the focused response that you may want):
please sombody help me… - openSUSE Forums

If you wish to try and optimise your alsa configuration further (and it may not be possible) then more information is required. To provide more information, then with your PC connected to the internet, please copy and paste the following into a gnome-terminal / konsole:

wget && su -c 'bash ./tsalsa' 

when prompted for a password please enter your root password. Please try to accurately answer the question on the number of plugs/jacks on your PC (for example my PC has 3 i/o plugs/jacks). When the script completes it will pass you a URL. Please post that URL here.

Also, please copy and paste the following, one line at a time, into a gnome-terminal/konsole and post the output here.
rpm -qa | grep alsa
rpm -qa | grep pulse
rpm -q libasound2
uname -a
cat /etc/modprobe.d/sound

Good luck in your efforts.