I have an untouched 4976.02 bios that works perfect on its own, but all the bios' that I make with Xbtool from it do not work. I really want my customized bios to work. I do not know if I need this whole"RC4 Key" thing. You know out of all the stuff I know this is really frustrating, because I think XBtool is about the only thing I never have undertood completely. Someone please help, do I need an RC4 key and if I do how do I use it, it does not state how this is done in the documentation.