Yes, I know. I just said that in my previous post. And thus, I'm trying to build correct sets now so that I don't have to worry about whether or not they will work later. Ok, maybe "dozens" was a slight exageration, but there are easily twice, if not three, times as many availabe roms as there should be for any given rom. Also, you again bring up the difference in our philosophies. You're of the "If it works it's good enough for me" camp, while I'm of the "If it's not the data on that was on the physical chip, it's no good" camp. I don't have a problem with this. I strongly support people having different opinions. I've just picked a harder path than you. But because of this, I feel that I'll be better rewarded in the end. Thanks for the link Necro. I'll be sure to take a look as soon as I get a chance.