Using the Asus flash utility, we duly flashed the bios via XP. That seemed to go fine, but the PC won't now boot - not even into the bios. No motherboard beeps, though power, light, fans etc all running fine.
Some boards have a backup of the BIOS in case the main one gets corrupted. When I flashed my BIOS, there was also an option to save the original to a floppy which I did. Most of the time when you flash the BIOS, all goes well - I even changed the 2 second splash screen to a pic of me (I wouldn't recommend trying this as it requires you to extract and reinsert the image into the BIN file with a tool). However on most new boards, if a BIOS update goes wrong it can usually be recovered.