Ok, before this thread gets insta-locked because I'm asking about a BIOS image, let me say a couple of things...
1) Obviously I own a Dreamcast already.  I'm not trying to do ANYTHING illegal.
2) I've looked 
everywhere on the net for the BIOS image for Chankast but I just can't find it.  I'd rip it manually myself if somebody could explain how to do it...
If anybody can help, please drop me a line at 
jklimek@gmail.comThanks.