Shouldn't it be attwifi? Otherwise the SSID wouldn't be right for the HomePass. Or does MACycle change it to attwifi as part of its code?Did you change the name of the ASUS softAP connection to Wi-Fi? Forgot to mention that in my last post.
EDIT: Nevermind, I got it. The connection name itself has to be "Wi-Fi" and the SSID "attwifi". The MAC Address successfully changed, I'm just waiting on the StreetPass notification light. Thanks a lot for your help, duwen.