So I'm doing the berry program with my Pokemon leaf green and sapphire versions cause of my internal battery.on the leaf green at the venasuar I pressed B+ select to get the instructions. Yet, it says that I need a cable for 2 gameboy advances in order to do this process. I only have a ds lite and a nintendo gameboy. Is it possible for me to find a cable to plug these two together? If so, where could I get one? If not, could you please tell me a way to do this without another gameboy? Thanks :3