I can help with this one

Start by going
here and downloading the
DrDOS 7.x utility, then put a floppy diskette in your floppy drive and run the DrDOS utilty. It creates a bootable floppy diskette for you.
Next, go to
Asus's download page for the A7N266-VM/AA and download the
aflash221.zip file. Extract the
aflash.exe file onto your bootable floppy diskette.
Now copy your
107nvm.awd file onto the floppy too.
Restart the computer with your bootable floppy in the drive. If it isn't already set to try to boot from floppy disk, you'll need to set it to do so (if you need help with that, just say). The computer should boot from the floppy diskette, say "Starting Caldera DR-DOS..." and end up at an
A:\ prompt. Type
aflash.exe
and it will start the utility and ask what BIOS file you want it to flash. Type
107NVM.AWD
and let it ride. You don't need to save the old BIOS or anything.
Bigger picture: does the system
need its BIOS updated? The usual reason, for this motherboard, is to support Thorton-core AthlonXP's or Applebred-core Durons.
Hope that helps
