IF you installed the chipset drivers off the support CD which came with the motherboard, do this:-
1) Insert the CD, you should have on your screen a mini table with a drivers list to install as follows:- Nvidia Chipset Driver Program, Make Nvidia PATA RAID Driver Disk etc etc etc - ignore these for now.
2) Under the Asus icon click on the far right tiny icon which says "Browse the file list of the support cd" it should then give you a contents of the driver versions & check what it says for Chipset which should read something like this: -Chipset
-WIN2K3 -nVidia Chipset(CK804) driver version V6.66 for Windows 2000/2003.
-WINXP -nVidia Chipset(CK804) driver version V6.65 for Windows XP(WHQL).
-Win64XP -nVidia Chipset(CK804) 64 bit driver version V6.65 for Windows XP(WHQL)/2003.
-2003x64 -nVidia Chipset(CK804) 64 bit driver version V6.66 for Windows 2003.
-Novell -nVidia DOS NDIS Ethernet and ODI driver V4.52.
When I recieved my mob I upgraded my chipset drivers to the latest ones which are here this applys to
Windows XP:-
http://www.nvidia.com/object/nforce_nf4_winxp32_amd_6.70.html
Basically regardless if you use the mentioned onces 6.70 off the above website then you will be using the same ones I'm using with Bios 1009, hope that helps. Any problems just let me know.