I need to update the bios of the computer I'm building next so the motherboard supports AM3 Processors. Do I need a floppy drive to update it(like you did in the old days) or can I use a CD/DVD drive?
I think that is still the best fail-safe way. Most can be updated in Windows now though. You just have to be careful that background programs don't interfer with it, like your antivirus software. Be sure to disable all the background programs you have running. And, read the directions closely, some will only work correctly from a drive that is FAT32 formated, check that out closely as well.
Best advice, read your manual and follow the instructions they supply.
Your board may or may not boot with the new CPU if it requires a BIOS update to be recognized, that is kind of a crap shoot.