its not "bio's", its "bios" and its what stores all the information that boots up your computer
i.e- voltages, hd boot up, pci slots, agp/pci-ex slots, etc.
AMD 3000+ @ 2.25
Corsair Twinx 1024mb 2x512mb XMS
MSI 6600GT's SLIed @ 565/1100
Neo 4 Platinum SLI Mobo