I found this on AMD forums talking about same thing... It may help if someone who knows a little more can verify that it has potential
" It's possible to update the configuration without reinstall all in XP and 2000.
Right click on "standard PC", select update driver and select "Install from a list of specific location (Advanced)".
After select "Don't search. I will choose the driver to install." and then "ACPI Mulprocessor PC".
Here, perhaps, you must deselect "show compatible hardware".
After that, windows must restart and rediscovery the modifications.
Perhaps, windows will ask some drivers after reboot. "