Go to the manufactures website for your laptop and go to where you would get the bios. See if they talk about this at all. I know a lot of new bios now can be run straight from windows xp using a program like WinFlash. For my DFI motherboard I just did that the other day and it worked perfectly.
Yep I know it works good from experience. I'm not sure though if you have to have special bios or anything. I might suggest searching google for winflash and see what you can find about it. Your laptop manufacture might even recommend it.