which chipset to download (ALSA-SIS Azalea)

[hihihi100]

http://ubuntuforums.org/attachment.p...8&d=1273598001

well, many thanks:

**091010-19.20****Alsa-Upgrade-Script-1.0.23-2 *********************
*
* You'll be upgraded from Alsa  to 1.0.23
*
* Run -h option for further help and to look up the workflows
*
* Note1: Alsa won't be upgraded before you run the
*        installation option -i!! 
*        The upgrade procedure shouldn't have any effect on Alsa 
*        until then. However - see Note2
*
* Note2: Do not delete the Alsa Source Directory under /usr/src!
*        When starting the script the 2nd time with -d,
*        the Alsa source dir will be deleted automatically!
*        You won't have sound until you're done with that installation
* 
* DISCLAIMER: Use this script at your own risk. I do not take any 
*             responsibility for any problems caused by running 
*             this script. Before running this script I strongly 
*             advise you to make a backup of your system.
*             You might enter problems restoring the system to its
*             original status when running the restore function 
*             supplied by the script.  
*                            
*  
***************************************************************************

how do I make a backup?