Hi, Albin:
Here are the links to the amd drivers you need. First, install the chipset driver and reboot. First file listed.
http://support.amd.com/en-us/download/chipset?os=Windows XP - Professional/Home&RenderOnServer=true
The raid drivers are the second file listed and if you need the utility, it is third.
Graphics: First file listed is the driver only and the second is the driver plus the catalyst control center.
http://support.amd.com/en-us/download/desktop?os=Windows XP - Professional/Home&RenderOnServer=true
Best Regards,
Paul