First off, it will work. You just *might* have to update it.
So BIOS, Basic Input Out System, lets you make hardware changes to our computer. Most users do not need to ever go into it, but if you want to overclock, configure a dual boot, or change fan speeds, you will enter BIOS. There is a great tutorial on how to update BIOS on pcworld.com
UPDATE: For more detailed info on everything that your BIOS can do, check out this article. Just remember, if you ever go into the BIOS just to check it out and you have no idea what you are doing, ALWAYS quit WITHOUT