I doubt PEBuilder will allow him to flash a BIOS: Make a DOS based bootfloppy with the awaard flash program and your new BIOS file. You can get bootdisk images from
www.bootdisk.com. Any DOS based bootdisk will do. Nero can use that image to create a bootable CD for example. If you don't have Nero, mkisofs can create bootable ISO files which you can burn (there are versions for windows of it)