Logically you should be able to do it exactly the same way as a floppy, except save the files to CD rather than floppy, then at the commend prompts instead of using A:\ as the starting address use whatever your rom drive is called, eg D:\ ? depends how many drives you have, but for safety wait for other thoughts and maybe give us the motherboard model and we can see if they have any suggestions, some boards can do live updates from the desktop, but we wont know until you tell us what you have, hope this helps a bit.