Attached Link: http://www.symantec.com/avcenter/venc/data/cih.html

There was an old Windows 98/Me virus called CIH/Chernobyl that corrupted the BIOS.  It did'nt affect XP, though.  Maybe this is a new incarnation.  Here's some info on CIH/Chernobyl.  Note the trigger dates.