I don't know much about your particular board but if you head to this site:
http://support.asus.com/download/download.aspx?SLanguage=en-us
Then choose motherboard under product
Then choose Socket939 under series
Then choose A8V Deluxe
When the page finally loads (Asus servers in US are SLOW), click on drivers tab at top.
Now depending on whether you have physically installed your hard drive on the VIA SATA ports or the Promise SATA ports (check your manual or the Asus site for which is which) determines which files you will need to download.
If it is VIA then you need to download this:
VIA VT6420 (VT8237) SATA RAID Driver Package Version 2.20D WHQL
Once downloaded and extracted it will either be all the files you need or it will have a Make Disk executable that will make a floppy for you.
If Promise then you need to download one of the two of these:
Promise SATA378 Driver V1.00.0.26 for Windows 98SE/NT4.0/ME/2000/XP/2003
-or-
Promise FastTrak 378 RAID Driver V1.00.1.37 for Windows 98SE/NT4/ME/2000/XP/2003
I think the regular SATA378 driver has a Make Disk function too but it is not listed. Better safe than sorry and download all of them and make three different driver disks depending on which you want to use. I personally recommend the Promise ports unless you are doing a RAID set up.
Hope this helps.