How do I go about getting the BIOS? Do I buy pre-programmed Flash or do I buy the Flash and the code separately?
This file is normally provided by your computer manufacturer, when you buy a computer or product that needs a BIOS the manufacturer should be able to provide the file. There is another chance on getting a BIOS which it would be getting in contact directly with the BIOS developer. American Megatrends Inc. (AMI) and Phoenix Technologies are some examples of BIOS the manufacturers.
Hope this information helps.