as suspected here is what to look for / a newer version of your bios updating tool
AFLASH
2.21 2002/12/23update
OS DOS
Description Aflash V2.21 Utility to update the motherboard flash BIOS - (DOS)
File Size 30.29 (KBytes)
latest bios file / final is version 1013 / there is also a beta version 1014 ????
1013 2002/08/05update
OS All
Description P2B-DS BIOS 1013
Added microcode update support for Coppermine B-0 stepping
File Size 199.86 (KBytes)
this is the link to use
http://support.asus.com/download/dow...Language=en-us
after you go there / choose motherbord from the very top drop down menu list "products"
second drop down list / choose select sereis = slot 1
in the third and final drop down list / choose you mobo model = P2B-DS
there will will find ALL for your mobo
regards
joe