You probably won't need to upgrade the bios, but if you do, just go to the reference tab at the top of this page, select your system and choose downloads (flash bios update) then follow the instructions....

Theres also the chipset drivers that control AGP functions, but who knows until its released.. I think it will just work away with no changes, but we will have to wait and see ;o)

I should be able to tell if it needs a BIOS change right?

If it did need a bios upgrade, then it wouldn't function properly in some way, so yes you would be able to tell... I can't see any reason why it would need one though..