When you put the TiVo back in to guided setup mode that should mean it started from scratch, just like the day you bought it. Therefore it should have done through the process of trying to determine network settings.
Can you please give some information on how the TiVo is connected to your home internet? Did you change your modem when changing to Bigpond? If you believe the imac is interfering with the TiVo (unlikely) have you tried taking that out of the equation and experienced anything different?
Bookmarks