Have not been to bali for 12 months and was considering taking my Wii this time to have it chipped. I have it just for the grandies. From the Australian side I believe there are two types of chips. One to play OS games and a seperate one to save games to an external hard drive. Many games can then be put onto the hard drive and used instead of putting the dvd's in and out. Anyone had it done OS and what they thought. Just considering my options.