Atrocities,
<pray>
To clear the CMOS,
Unplug the system
Remove the battery
<if possible>
Remove any cards with upgradable BIOs
Replace with old cards
</if possible>
Remove any unnessasary cards such as Network card. Many of them have upgradable BIOs
Boot off floppy or CD that you have put the BIOs file on.
(you prepared at work or at a freinds)
Flash the BIOs
Boot off a floopy or cd with anti virus on it
Boot off of a CD with anti virus
</pray>
Folks, anymore ideas? I probalby left something out