I have the 3G and am on Rogers... I use the US itunes store... i had problems with the internet tethering option - it wouldnt show up in settings on the iPhone - after restoring my iphone with an old backup... i also had the phone previously registered for development and the developers build of 3.0 on it... Apple told me to use the 'correct' itunes store... Now that i got my 3G S im worried the internet tethering will also disappear when i try to set up and restore an old backup... any advice before i set it up? thx