Hi, I've written some x86 BIOS articles in my spare time, which may be of some interest: http://www.geocities.com/mamanzip/Articles/Award_Bios_RE/Award_Bios_RE_guide.html. This is a comprehensive guide to Award BIOS reverse engineering http://www.geocities.com/mamanzip/Articles/POST_jump_table_hacking.html. This is an Award BIOS Code Injection article. http://www.geocities.com/mamanzip/Articles/Low_Cost_Embedded_x86_Teaching_Tool.html. This article actually a comprehensive guide on how to build your own PCI Expansion/Option ROM. Note that some of these articles are legal reverse engineering articles. They are not a "how-to-crack" articles, rather, they are "how-does-it-work" article. cheers, Pinczakko