We just got a Wii for Xmas and I bought the wireless Guitar Hero III. I have played PS2 wired Guitar Hero II and did not notice any issues of lag or response time. But with this guitar and it being wireless it just doesn't feel right. Not sure. I could play the "hard" level on PS2 fairly well but have trouble with this even on "medium"! It just doesn't respond like I think it should. Anyway, I've done the calibration when you pause a game and go to options but that doesn't seem to help. My guitar was brand new and sealed so I don't think there is a problem with the guitar. I just think because it's wireless it sucks. I'd rather it be hard wired now that I've played it. Do they make a USB Dongle or anything so you can actually hard wire the controller into the back of Wii?? I think this would solve the issues. Thanks for any help. We love Wii and the wireless controller for the "other" games which work well but for Guitar Hero III I am disappointed so far. If anyone could provide me links to a solution that would help too.